diff --git a/soh/soh/CrashHandlerExt.h b/soh/soh/CrashHandlerExt.h
index ad1a6f1c66..7f0d97df64 100644
--- a/soh/soh/CrashHandlerExt.h
+++ b/soh/soh/CrashHandlerExt.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <stddef.h>
 
 #ifdef __cplusplus
diff --git a/soh/soh/Enhancements/FileSelectEnhancements.h b/soh/soh/Enhancements/FileSelectEnhancements.h
index 4400841549..4aeea89cbf 100644
--- a/soh/soh/Enhancements/FileSelectEnhancements.h
+++ b/soh/soh/Enhancements/FileSelectEnhancements.h
@@ -1,5 +1,4 @@
-#ifndef FILE_SELECT_ENHANCEMENTS_H
-#define FILE_SELECT_ENHANCEMENTS_H
+#pragma once
 
 #include "z64.h"
 
@@ -20,5 +19,3 @@ typedef enum {
     RSM_NO_RANDOMIZER_GENERATED,
     RSM_MAX,
 } RandomizerSettingsMenuEnums;
-
-#endif
diff --git a/soh/soh/Enhancements/TimeDisplay/TimeDisplay.h b/soh/soh/Enhancements/TimeDisplay/TimeDisplay.h
index 46a67c639a..5e37561610 100644
--- a/soh/soh/Enhancements/TimeDisplay/TimeDisplay.h
+++ b/soh/soh/Enhancements/TimeDisplay/TimeDisplay.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <vector>
 #include <ship/window/gui/GuiWindow.h>
 
diff --git a/soh/soh/Enhancements/bootcommands.h b/soh/soh/Enhancements/bootcommands.h
index 48b361b13e..a080538a8f 100644
--- a/soh/soh/Enhancements/bootcommands.h
+++ b/soh/soh/Enhancements/bootcommands.h
@@ -1,6 +1,3 @@
-#ifndef _BOOTCOMMANDS_H_
-#define _BOOTCOMMANDS_H_
+#pragma once
 
 void BootCommands_Init();
-
-#endif
\ No newline at end of file
diff --git a/soh/soh/Enhancements/controls/Mouse.h b/soh/soh/Enhancements/controls/Mouse.h
index c25360185a..c22d9ac5c0 100644
--- a/soh/soh/Enhancements/controls/Mouse.h
+++ b/soh/soh/Enhancements/controls/Mouse.h
@@ -1,6 +1,3 @@
-#ifndef MOUSE_H
-#define MOUSE_H
-
 #pragma once
 
 #include <libultraship/libultra.h>
@@ -20,6 +17,3 @@ void Mouse_UpdateQuickspinCount();
 #ifdef __cplusplus
 }; // extern "C"
 #endif
-
-// MOUSE_H
-#endif
diff --git a/soh/soh/Enhancements/cosmetics/cosmeticsTypes.h b/soh/soh/Enhancements/cosmetics/cosmeticsTypes.h
index fec112c42c..960083be49 100644
--- a/soh/soh/Enhancements/cosmetics/cosmeticsTypes.h
+++ b/soh/soh/Enhancements/cosmetics/cosmeticsTypes.h
@@ -1,3 +1,5 @@
+#pragma once
+
 typedef enum {
     COLORSCHEME_N64,
     COLORSCHEME_GAMECUBE,
diff --git a/soh/soh/Enhancements/debugger/MessageViewer.h b/soh/soh/Enhancements/debugger/MessageViewer.h
index 0faed49cc5..6881c5efea 100644
--- a/soh/soh/Enhancements/debugger/MessageViewer.h
+++ b/soh/soh/Enhancements/debugger/MessageViewer.h
@@ -1,5 +1,5 @@
-#ifndef CUSTOMMESSAGEDEBUGGER_H
-#define CUSTOMMESSAGEDEBUGGER_H
+#pragma once
+
 #include "z64.h"
 
 #ifdef __cplusplus
@@ -56,4 +56,3 @@ class MessageViewer final : public Ship::GuiWindow {
 };
 
 #endif //__cplusplus
-#endif // CUSTOMMESSAGEDEBUGGER_H
diff --git a/soh/soh/Enhancements/debugger/SohConsoleWindow.h b/soh/soh/Enhancements/debugger/SohConsoleWindow.h
index daf401451c..eab65fbdcb 100644
--- a/soh/soh/Enhancements/debugger/SohConsoleWindow.h
+++ b/soh/soh/Enhancements/debugger/SohConsoleWindow.h
@@ -1,5 +1,4 @@
-#ifndef SOH_CONSOLE_H
-#define SOH_CONSOLE_H
+#pragma once
 
 #include <ship/window/gui/ConsoleWindow.h>
 
@@ -10,5 +9,3 @@ class SohConsoleWindow : public Ship::ConsoleWindow {
   protected:
     void DrawElement() override;
 };
-
-#endif // SOH_CONSOLE_H
diff --git a/soh/soh/Enhancements/debugger/SohGfxDebuggerWindow.h b/soh/soh/Enhancements/debugger/SohGfxDebuggerWindow.h
index 9de2d752f1..cb8b72e804 100644
--- a/soh/soh/Enhancements/debugger/SohGfxDebuggerWindow.h
+++ b/soh/soh/Enhancements/debugger/SohGfxDebuggerWindow.h
@@ -1,5 +1,4 @@
-#ifndef SOH_GFX_DEBUGGER_H
-#define SOH_GFX_DEBUGGER_H
+#pragma once
 
 #include <libultraship/window/gui/GfxDebuggerWindow.h>
 
@@ -12,5 +11,3 @@ class SohGfxDebuggerWindow : public LUS::GfxDebuggerWindow {
     void UpdateElement() override;
     void DrawElement() override;
 };
-
-#endif // SOH_GFX_DEBUGGER_H
diff --git a/soh/soh/Enhancements/debugger/SohStatsWindow.h b/soh/soh/Enhancements/debugger/SohStatsWindow.h
index ed1b1c6c59..2d5b191296 100644
--- a/soh/soh/Enhancements/debugger/SohStatsWindow.h
+++ b/soh/soh/Enhancements/debugger/SohStatsWindow.h
@@ -1,5 +1,4 @@
-#ifndef SOH_STATS_H
-#define SOH_STATS_H
+#pragma once
 
 #include <ship/window/gui/GuiWindow.h>
 
@@ -13,5 +12,3 @@ class SohStatsWindow final : public Ship::GuiWindow {
     void DrawElement() override;
     void UpdateElement() override{};
 };
-
-#endif // SOH_STATS_H
diff --git a/soh/soh/Enhancements/debugger/hookDebugger.h b/soh/soh/Enhancements/debugger/hookDebugger.h
index 7cf22b1b0f..115153dda6 100644
--- a/soh/soh/Enhancements/debugger/hookDebugger.h
+++ b/soh/soh/Enhancements/debugger/hookDebugger.h
@@ -1,5 +1,4 @@
-#ifndef hookDebugger_h
-#define hookDebugger_h
+#pragma once
 
 #include <ship/window/gui/GuiWindow.h>
 
@@ -11,5 +10,3 @@ class HookDebuggerWindow final : public Ship::GuiWindow {
     void DrawElement() override;
     void UpdateElement() override{};
 };
-
-#endif // hookDebugger_h
diff --git a/soh/soh/Enhancements/enhancementTypes.h b/soh/soh/Enhancements/enhancementTypes.h
index e235bba4a7..8ae8449357 100644
--- a/soh/soh/Enhancements/enhancementTypes.h
+++ b/soh/soh/Enhancements/enhancementTypes.h
@@ -1,5 +1,4 @@
-#ifndef _ENHANCEMENT_TYPES_H_
-#define _ENHANCEMENT_TYPES_H_
+#pragma once
 
 typedef enum {
     WARP_MODE_OVERRIDE_OFF,
@@ -147,5 +146,3 @@ typedef enum {
     TELEPORT_TRAP_SIMPLE,
     TELEPORT_TRAP_ADVANCED,
 } TeleportTrapMode;
-
-#endif
diff --git a/soh/soh/Enhancements/game-interactor/GameInteractionEffect.h b/soh/soh/Enhancements/game-interactor/GameInteractionEffect.h
index 2db0fd30d3..d00c2de0b7 100644
--- a/soh/soh/Enhancements/game-interactor/GameInteractionEffect.h
+++ b/soh/soh/Enhancements/game-interactor/GameInteractionEffect.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef GameInteractionEffect_h
-#define GameInteractionEffect_h
-
 #include <stdint.h>
 
 #ifdef __cplusplus
@@ -267,4 +264,3 @@ class SpawnActor : public GameInteractionEffectBase, public ParameterizedGameInt
 } // namespace GameInteractionEffect
 
 #endif /* __cplusplus */
-#endif /* GameInteractionEffect_h */
diff --git a/soh/soh/Enhancements/game-interactor/GameInteractor.h b/soh/soh/Enhancements/game-interactor/GameInteractor.h
index 683d1c0224..5b33b8cf5b 100644
--- a/soh/soh/Enhancements/game-interactor/GameInteractor.h
+++ b/soh/soh/Enhancements/game-interactor/GameInteractor.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef GameInteractor_h
-#define GameInteractor_h
-
 #include <libultraship/bridge/consolevariablebridge.h>
 #include "vanilla-behavior/GIVanillaBehavior.h"
 
@@ -578,4 +575,3 @@ class GameInteractor {
 #undef GET_CURRENT_REGISTERING_INFO
 
 #endif /* __cplusplus */
-#endif /* GameInteractor_h */
diff --git a/soh/soh/Enhancements/game-interactor/vanilla-behavior/GIVanillaBehavior.h b/soh/soh/Enhancements/game-interactor/vanilla-behavior/GIVanillaBehavior.h
index 1011a44d3a..5d0b6beacd 100644
--- a/soh/soh/Enhancements/game-interactor/vanilla-behavior/GIVanillaBehavior.h
+++ b/soh/soh/Enhancements/game-interactor/vanilla-behavior/GIVanillaBehavior.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef GI_VANILLA_BEHAVIOR_H
-#define GI_VANILLA_BEHAVIOR_H
-
 typedef enum {
     // #### `result`
     // ```c
@@ -3751,5 +3748,3 @@ typedef enum {
     // - `*EnBox`
     VB_CHEST_CONSIDER_CHEST_OPEN,
 } GIVanillaBehavior;
-
-#endif
diff --git a/soh/soh/Enhancements/gameconsole.h b/soh/soh/Enhancements/gameconsole.h
index 09d445f559..b92866041d 100644
--- a/soh/soh/Enhancements/gameconsole.h
+++ b/soh/soh/Enhancements/gameconsole.h
@@ -1,5 +1,4 @@
-#ifndef _GAMECONSOLE_H_
-#define _GAMECONSOLE_H_
+#pragma once
 
 #include <stdbool.h>
 #include <libultraship/bridge/consolevariablebridge.h>
@@ -36,5 +35,3 @@ s32 GameConsole_Split(char* str, char** argv);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/soh/soh/Enhancements/gameplaystatswindow.h b/soh/soh/Enhancements/gameplaystatswindow.h
index 59cb6bfafe..b2fbe6ca40 100644
--- a/soh/soh/Enhancements/gameplaystatswindow.h
+++ b/soh/soh/Enhancements/gameplaystatswindow.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <ship/window/gui/GuiWindow.h>
 
 class GameplayStatsWindow final : public Ship::GuiWindow {
diff --git a/soh/soh/Enhancements/kaleido.h b/soh/soh/Enhancements/kaleido.h
index 922a1dac31..e7628dff77 100644
--- a/soh/soh/Enhancements/kaleido.h
+++ b/soh/soh/Enhancements/kaleido.h
@@ -1,5 +1,5 @@
-#ifndef KALEIDO_H
-#define KALEIDO_H
+#pragma once
+
 #include <z64.h>
 
 #ifdef __cplusplus
@@ -176,5 +176,3 @@ void RandoKaleido_UpdateMiscCollectibles(int16_t inDungeonScene);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // KALEIDO_H
diff --git a/soh/soh/Enhancements/nametag.h b/soh/soh/Enhancements/nametag.h
index 95e335dcca..afc8b21768 100644
--- a/soh/soh/Enhancements/nametag.h
+++ b/soh/soh/Enhancements/nametag.h
@@ -1,5 +1,4 @@
-#ifndef NAMETAG_H
-#define NAMETAG_H
+#pragma once
 
 #include <libultraship/color.h>
 
@@ -31,5 +30,3 @@ void NameTag_RemoveAllByTag(const char* tag);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // NAMETAG_H
diff --git a/soh/soh/Enhancements/randomizer/Plandomizer.h b/soh/soh/Enhancements/randomizer/Plandomizer.h
index 1c45e2d8ba..6f9b2d23ea 100644
--- a/soh/soh/Enhancements/randomizer/Plandomizer.h
+++ b/soh/soh/Enhancements/randomizer/Plandomizer.h
@@ -1,6 +1,4 @@
 #pragma once
-#ifndef PLANDOMIZER_H
-#define PLANDOMIZER_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -10,8 +8,6 @@ extern "C" {
 }
 #endif
 
-#endif // PLANDOMIZER_H
-
 #include <ship/window/gui/GuiWindow.h>
 #include "soh/Enhancements/randomizer/item.h"
 
diff --git a/soh/soh/Enhancements/randomizer/RocsFeatherCycle.h b/soh/soh/Enhancements/randomizer/RocsFeatherCycle.h
index 859cb5ab6f..b9c6b50c9c 100644
--- a/soh/soh/Enhancements/randomizer/RocsFeatherCycle.h
+++ b/soh/soh/Enhancements/randomizer/RocsFeatherCycle.h
@@ -1,9 +1,6 @@
-#ifndef ROCS_FEATHER_H
-#define ROCS_FEATHER_H
+#pragma once
 
 #include <z64.h>
 
 uint8_t Enhancement_GetNextNayrusItem();
 uint8_t Enhancement_GetPrevNayrusItem();
-
-#endif
diff --git a/soh/soh/Enhancements/randomizer/ShuffleRocks.h b/soh/soh/Enhancements/randomizer/ShuffleRocks.h
index c8c9a877b9..1c9d6135b1 100644
--- a/soh/soh/Enhancements/randomizer/ShuffleRocks.h
+++ b/soh/soh/Enhancements/randomizer/ShuffleRocks.h
@@ -1,5 +1,4 @@
-#ifndef SHUFFLEROCKS_H
-#define SHUFFLEROCKS_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -8,5 +7,3 @@ void EnIshi_RandomizerInit(void* actorRef);
 #ifdef __cplusplus
 };
 #endif
-
-#endif // SHUFFLEROCKS_H
diff --git a/soh/soh/Enhancements/randomizer/ShuffleTradeItems.h b/soh/soh/Enhancements/randomizer/ShuffleTradeItems.h
index a43f7de527..dbf54e5f62 100644
--- a/soh/soh/Enhancements/randomizer/ShuffleTradeItems.h
+++ b/soh/soh/Enhancements/randomizer/ShuffleTradeItems.h
@@ -1,5 +1,4 @@
-#ifndef Z_ADULT_TRADE_SHUFFLE_H
-#define Z_ADULT_TRADE_SHUFFLE_H
+#pragma once
 
 #include <libultraship/libultra/types.h>
 
@@ -7,5 +6,3 @@ u8 Randomizer_GetNextChildTradeItem();
 u8 Randomizer_GetPrevChildTradeItem();
 u8 Randomizer_GetNextAdultTradeItem();
 u8 Randomizer_GetPrevAdultTradeItem();
-
-#endif
diff --git a/soh/soh/Enhancements/randomizer/draw.h b/soh/soh/Enhancements/randomizer/draw.h
index a9937afad9..05958dc8fd 100644
--- a/soh/soh/Enhancements/randomizer/draw.h
+++ b/soh/soh/Enhancements/randomizer/draw.h
@@ -1,5 +1,3 @@
-#ifndef RANDODRAW_H
-#define RANDODRAW_H
 #pragma once
 
 #include "../item-tables/ItemTableTypes.h"
@@ -45,5 +43,3 @@ void Randomizer_DrawStickBag(PlayState* play, GetItemEntry* getItemEntry);
 #ifdef __cplusplus
 };
 #endif
-
-#endif
diff --git a/soh/soh/Enhancements/randomizer/fishsanity.h b/soh/soh/Enhancements/randomizer/fishsanity.h
index 8f5255807d..ef3ea6f8f8 100644
--- a/soh/soh/Enhancements/randomizer/fishsanity.h
+++ b/soh/soh/Enhancements/randomizer/fishsanity.h
@@ -1,5 +1,3 @@
-#ifndef FISHSANITY_H
-#define FISHSANITY_H
 #pragma once
 
 #include <z64.h>
@@ -209,5 +207,3 @@ void Fishsanity_CloseGreyscaleColor(PlayState* play);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // FISHSANITY_H
diff --git a/soh/soh/Enhancements/randomizer/item_category_adj.h b/soh/soh/Enhancements/randomizer/item_category_adj.h
index 53a57e7d4f..8672b47e33 100644
--- a/soh/soh/Enhancements/randomizer/item_category_adj.h
+++ b/soh/soh/Enhancements/randomizer/item_category_adj.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef ITEM_CATEGORY_ADJ_H
-#define ITEM_CATEGORY_ADJ_H
-
 #include "../item-tables/ItemTableTypes.h"
 
 #ifdef __cplusplus
@@ -14,5 +11,3 @@ GetItemCategory Randomizer_AdjustItemCategory(GetItemEntry item);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/soh/soh/Enhancements/randomizer/option.h b/soh/soh/Enhancements/randomizer/option.h
index b71038d1b1..e7f582b2db 100644
--- a/soh/soh/Enhancements/randomizer/option.h
+++ b/soh/soh/Enhancements/randomizer/option.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef RANDOPTION_H
-#define RANDOPTION_H
-
 #include <stdint.h>
 #include <set>
 #include <string>
@@ -521,5 +518,3 @@ class OptionGroup {
     bool mDisabled = false;
 };
 } // namespace Rando
-
-#endif // RANDOPTION_H
\ No newline at end of file
diff --git a/soh/soh/Enhancements/randomizer/rando_hash.h b/soh/soh/Enhancements/randomizer/rando_hash.h
index 9c9526c28c..bdbf13fa90 100644
--- a/soh/soh/Enhancements/randomizer/rando_hash.h
+++ b/soh/soh/Enhancements/randomizer/rando_hash.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef RANDOHASH_H
-#define RANDOHASH_H
-
 #include "randomizerTypes.h"
 #include <array>
 #include <textures/icon_item_static/icon_item_static.h>
@@ -110,4 +107,3 @@ inline std::array<Sprite, 100> gSeedTextures = { {
     { dgQuestIconMagicJarSmallTex, 24, 24, G_IM_FMT_RGBA, G_IM_SIZ_32b, 98 },
     { dgQuestIconMagicJarBigTex, 24, 24, G_IM_FMT_RGBA, G_IM_SIZ_32b, 99 },
 } };
-#endif
\ No newline at end of file
diff --git a/soh/soh/Enhancements/randomizer/randomizer_entrance.h b/soh/soh/Enhancements/randomizer/randomizer_entrance.h
index 7b87ce4914..cb6f474285 100644
--- a/soh/soh/Enhancements/randomizer/randomizer_entrance.h
+++ b/soh/soh/Enhancements/randomizer/randomizer_entrance.h
@@ -1,5 +1,4 @@
-#ifndef _RANDO_ENTRANCE_H_
-#define _RANDO_ENTRANCE_H_
+#pragma once
 
 #include <stdint.h>
 
@@ -55,5 +54,3 @@ void Entrance_SetEntranceDiscovered(uint16_t entranceIndex, uint8_t isReversedEn
 #ifdef __cplusplus
 }
 #endif
-
-#endif //_RANDO_ENTRANCE_H_
diff --git a/soh/soh/Enhancements/randomizer/randomizer_grotto.h b/soh/soh/Enhancements/randomizer/randomizer_grotto.h
index 8da99ac042..103bc645c3 100644
--- a/soh/soh/Enhancements/randomizer/randomizer_grotto.h
+++ b/soh/soh/Enhancements/randomizer/randomizer_grotto.h
@@ -1,5 +1,4 @@
-#ifndef _RANDO_GROTTO_H_
-#define _RANDO_GROTTO_H_
+#pragma once
 
 #include "z64math.h"
 #include "z64actor.h"
@@ -40,5 +39,3 @@ s8 Grotto_CurrentGrotto();
 #ifdef __cplusplus
 };
 #endif
-
-#endif //_RANDO_GROTTO_H_
diff --git a/soh/soh/Enhancements/randomizer/savefile.h b/soh/soh/Enhancements/randomizer/savefile.h
index 520db19825..fe0eb186cb 100644
--- a/soh/soh/Enhancements/randomizer/savefile.h
+++ b/soh/soh/Enhancements/randomizer/savefile.h
@@ -1,5 +1,4 @@
-#ifndef RANDOSAVEFILE_H
-#define RANDOSAVEFILE_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -10,5 +9,3 @@ void Randomizer_InitSaveFile();
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/soh/soh/Enhancements/randomizer/tricks.h b/soh/soh/Enhancements/randomizer/tricks.h
index 066dd44171..0bd2b93593 100644
--- a/soh/soh/Enhancements/randomizer/tricks.h
+++ b/soh/soh/Enhancements/randomizer/tricks.h
@@ -1,8 +1,5 @@
 #pragma once
 
-#ifndef TRICKS_H
-#define TRICKS_H
-
 #include <imgui.h>
 #include "randomizerTypes.h"
 
@@ -31,5 +28,3 @@ class Tricks {
     static void DrawTagChips(const std::set<Tag>& rtTags, std::string trickName = "");
 };
 } // namespace Rando
-
-#endif // TRICKS_H
\ No newline at end of file
diff --git a/soh/soh/Enhancements/savestates.h b/soh/soh/Enhancements/savestates.h
index 0fe4a9ce52..6cfa599218 100644
--- a/soh/soh/Enhancements/savestates.h
+++ b/soh/soh/Enhancements/savestates.h
@@ -1,5 +1,4 @@
-#ifndef SAVE_STATES_H
-#define SAVE_STATES_H
+#pragma once
 
 #include <stdint.h>
 #include <queue>
@@ -57,5 +56,3 @@ class SaveStateMgr {
     void ProcessSaveStateRequests(void);
 };
 extern std::shared_ptr<SaveStateMgr> gSaveStateMgr;
-
-#endif
diff --git a/soh/soh/Enhancements/speechsynthesizer/DarwinSpeechSynthesizer.h b/soh/soh/Enhancements/speechsynthesizer/DarwinSpeechSynthesizer.h
index 623fd8e01d..c91688ac6d 100644
--- a/soh/soh/Enhancements/speechsynthesizer/DarwinSpeechSynthesizer.h
+++ b/soh/soh/Enhancements/speechsynthesizer/DarwinSpeechSynthesizer.h
@@ -5,8 +5,7 @@
 //  Created by David Chavez on 22.11.22.
 //
 
-#ifndef SOHDarwinSpeechSynthesizer_h
-#define SOHDarwinSpeechSynthesizer_h
+#pragma once
 
 #include "SpeechSynthesizer.h"
 
@@ -23,5 +22,3 @@ class DarwinSpeechSynthesizer : public SpeechSynthesizer {
   private:
     void* mSynthesizer;
 };
-
-#endif /* DarwinSpeechSynthesizer_h */
diff --git a/soh/soh/Enhancements/speechsynthesizer/SAPISpeechSynthesizer.h b/soh/soh/Enhancements/speechsynthesizer/SAPISpeechSynthesizer.h
index c5dfb59b9a..4d1c3c6467 100644
--- a/soh/soh/Enhancements/speechsynthesizer/SAPISpeechSynthesizer.h
+++ b/soh/soh/Enhancements/speechsynthesizer/SAPISpeechSynthesizer.h
@@ -5,8 +5,7 @@
 //  Created by David Chavez on 22.11.22.
 //
 
-#ifndef SOHSAPISpeechSynthesizer_h
-#define SOHSAPISpeechSynthesizer_h
+#pragma once
 
 #include "SpeechSynthesizer.h"
 #include <stdio.h>
@@ -21,5 +20,3 @@ class SAPISpeechSynthesizer : public SpeechSynthesizer {
     bool DoInit(void);
     void DoUninitialize(void);
 };
-
-#endif /* SAPISpeechSynthesizer_h */
diff --git a/soh/soh/Enhancements/speechsynthesizer/SpeechLogger.h b/soh/soh/Enhancements/speechsynthesizer/SpeechLogger.h
index 3be27945fa..4fc8a5823a 100644
--- a/soh/soh/Enhancements/speechsynthesizer/SpeechLogger.h
+++ b/soh/soh/Enhancements/speechsynthesizer/SpeechLogger.h
@@ -1,5 +1,4 @@
-#ifndef SOHSpeechLogger_h
-#define SOHSpeechLogger_h
+#pragma once
 
 #include "SpeechSynthesizer.h"
 
@@ -13,5 +12,3 @@ class SpeechLogger : public SpeechSynthesizer {
     bool DoInit(void);
     void DoUninitialize(void);
 };
-
-#endif
diff --git a/soh/soh/Enhancements/speechsynthesizer/SpeechSynthesizer.h b/soh/soh/Enhancements/speechsynthesizer/SpeechSynthesizer.h
index 5456e9611b..0a4ed241bf 100644
--- a/soh/soh/Enhancements/speechsynthesizer/SpeechSynthesizer.h
+++ b/soh/soh/Enhancements/speechsynthesizer/SpeechSynthesizer.h
@@ -5,8 +5,7 @@
 //  Created by David Chavez on 22.11.22.
 //
 
-#ifndef SOHSpeechSynthesizer_h
-#define SOHSpeechSynthesizer_h
+#pragma once
 
 class SpeechSynthesizer {
   public:
@@ -27,8 +26,6 @@ class SpeechSynthesizer {
     bool mInitialized;
 };
 
-#endif /* SpeechSynthesizer_h */
-
 #ifdef _WIN32
 #include "SAPISpeechSynthesizer.h"
 #elif defined(__APPLE__)
diff --git a/soh/soh/Enhancements/timesplits/TimeSplits.h b/soh/soh/Enhancements/timesplits/TimeSplits.h
index a005e568d8..4a4828a373 100644
--- a/soh/soh/Enhancements/timesplits/TimeSplits.h
+++ b/soh/soh/Enhancements/timesplits/TimeSplits.h
@@ -1,6 +1,4 @@
 #pragma once
-#ifndef TIMESPLITS_H
-#define TIMESPLITS_H
 
 #include <ship/window/gui/GuiWindow.h>
 
@@ -54,5 +52,3 @@ typedef struct {
 } SplitObject;
 
 #endif
-
-#endif // TIMESPLITS_H
diff --git a/soh/soh/Extractor/Extract.h b/soh/soh/Extractor/Extract.h
index 5ec3160864..71823405c5 100644
--- a/soh/soh/Extractor/Extract.h
+++ b/soh/soh/Extractor/Extract.h
@@ -1,5 +1,4 @@
-#ifndef EXTRACT_H
-#define EXTRACT_H
+#pragma once
 
 #include <atomic>
 #include <stdint.h>
@@ -67,4 +66,3 @@ class Extractor {
                    std::atomic<size_t>* totalExtract);
     std::string Mkdtemp();
 };
-#endif
diff --git a/soh/soh/Extractor/TorchExtract.h b/soh/soh/Extractor/TorchExtract.h
index f2f3647ee4..958adfe85e 100644
--- a/soh/soh/Extractor/TorchExtract.h
+++ b/soh/soh/Extractor/TorchExtract.h
@@ -1,5 +1,4 @@
-#ifndef TORCHEXTRACT_H
-#define TORCHEXTRACT_H
+#pragma once
 
 #include <atomic>
 #include <cstddef>
@@ -20,5 +19,3 @@ std::string Extract(const std::string& romPath, const std::string& srcDir, const
                     const std::string& portVersion, std::atomic<size_t>* progress);
 
 } // namespace SohTorch
-
-#endif
diff --git a/soh/soh/GameVersions.h b/soh/soh/GameVersions.h
index ce532d2eb0..1e52bd99f5 100644
--- a/soh/soh/GameVersions.h
+++ b/soh/soh/GameVersions.h
@@ -1,6 +1,3 @@
-#ifndef GAME_VERSION_H
-#define GAME_VERSION_H
-
 #pragma once
 
 #define OOT_NTSC_US_10 0xEC7011B7
@@ -24,5 +21,3 @@
 #define OOT_IQUE_TW 0x3D81FB3E
 #define OOT_IQUE_CN 0xB1E1E07B
 #define UNKNOWN_GAME_VERSION 0xFFFFFFFF
-
-#endif
diff --git a/soh/soh/Network/Anchor/Anchor.h b/soh/soh/Network/Anchor/Anchor.h
index ae79228472..9cd7608be5 100644
--- a/soh/soh/Network/Anchor/Anchor.h
+++ b/soh/soh/Network/Anchor/Anchor.h
@@ -1,5 +1,5 @@
-#ifndef NETWORK_ANCHOR_H
-#define NETWORK_ANCHOR_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include "soh/Network/Network.h"
@@ -196,4 +196,3 @@ class AnchorRoomWindow : public Ship::GuiWindow {
 };
 
 #endif // __cplusplus
-#endif // NETWORK_ANCHOR_H
diff --git a/soh/soh/Network/Anchor/JsonConversions.hpp b/soh/soh/Network/Anchor/JsonConversions.hpp
index f2720058af..83c2f77304 100644
--- a/soh/soh/Network/Anchor/JsonConversions.hpp
+++ b/soh/soh/Network/Anchor/JsonConversions.hpp
@@ -1,5 +1,5 @@
-#ifndef NETWORK_ANCHOR_JSON_CONVERSIONS_H
-#define NETWORK_ANCHOR_JSON_CONVERSIONS_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include <nlohmann/json.hpp>
@@ -209,4 +209,3 @@ inline void from_json(const json& j, SaveContext& saveContext) {
 }
 
 #endif // __cplusplus
-#endif // NETWORK_ANCHOR_JSON_CONVERSIONS_H
diff --git a/soh/soh/Network/CrowdControl/CrowdControl.h b/soh/soh/Network/CrowdControl/CrowdControl.h
index 627f436165..5ec7e157f5 100644
--- a/soh/soh/Network/CrowdControl/CrowdControl.h
+++ b/soh/soh/Network/CrowdControl/CrowdControl.h
@@ -1,5 +1,5 @@
-#ifndef NETWORK_CROWD_CONTROL_H
-#define NETWORK_CROWD_CONTROL_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include <thread>
@@ -87,4 +87,3 @@ class CrowdControl : public Network {
 };
 
 #endif // __cplusplus
-#endif // NETWORK_CROWD_CONTROL_H
diff --git a/soh/soh/Network/Network.h b/soh/soh/Network/Network.h
index ea876dc4df..e49b909e57 100644
--- a/soh/soh/Network/Network.h
+++ b/soh/soh/Network/Network.h
@@ -1,5 +1,5 @@
-#ifndef NETWORK_H
-#define NETWORK_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include <thread>
@@ -46,4 +46,3 @@ class Network {
 };
 
 #endif // __cplusplus
-#endif // NETWORK_H
diff --git a/soh/soh/Network/Sail/Sail.h b/soh/soh/Network/Sail/Sail.h
index c04bf897fc..9b26c23270 100644
--- a/soh/soh/Network/Sail/Sail.h
+++ b/soh/soh/Network/Sail/Sail.h
@@ -1,5 +1,5 @@
-#ifndef NETWORK_SAIL_H
-#define NETWORK_SAIL_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include <memory>
@@ -23,4 +23,3 @@ class Sail : public Network {
 };
 
 #endif // __cplusplus
-#endif // NETWORK_SAIL_H
diff --git a/soh/soh/Notification/Notification.h b/soh/soh/Notification/Notification.h
index 9550572626..cb7e5063b9 100644
--- a/soh/soh/Notification/Notification.h
+++ b/soh/soh/Notification/Notification.h
@@ -1,5 +1,5 @@
-#ifndef NOTIFICATION_H
-#define NOTIFICATION_H
+#pragma once
+
 #ifdef __cplusplus
 
 #include <string>
@@ -35,4 +35,3 @@ void Emit(Options notification);
 } // namespace Notification
 
 #endif // __cplusplus
-#endif // NOTIFICATION_H
diff --git a/soh/soh/ObjectExtension/ActorListIndex.h b/soh/soh/ObjectExtension/ActorListIndex.h
index 84f00449d0..3870cab7a0 100644
--- a/soh/soh/ObjectExtension/ActorListIndex.h
+++ b/soh/soh/ObjectExtension/ActorListIndex.h
@@ -1,5 +1,4 @@
-#ifndef ACTOR_LIST_INDEX_H
-#define ACTOR_LIST_INDEX_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -12,5 +11,3 @@ void SetActorListIndex(const Actor* actor, int16_t index);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // ACTOR_LIST_INDEX_H
\ No newline at end of file
diff --git a/soh/soh/ObjectExtension/ActorMaximumHealth.h b/soh/soh/ObjectExtension/ActorMaximumHealth.h
index d3ee67acdf..cf6c9aa3e7 100644
--- a/soh/soh/ObjectExtension/ActorMaximumHealth.h
+++ b/soh/soh/ObjectExtension/ActorMaximumHealth.h
@@ -1,5 +1,4 @@
-#ifndef ACTOR_MAXIMUM_HEALTH_H
-#define ACTOR_MAXIMUM_HEALTH_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -13,5 +12,3 @@ void SetActorMaximumHealth(const Actor* actor, u8 maximumHealth);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // ACTOR_MAXIMUM_HEALTH_H
\ No newline at end of file
diff --git a/soh/soh/ShipInit.hpp b/soh/soh/ShipInit.hpp
index e96e77f914..bddb77e8a0 100644
--- a/soh/soh/ShipInit.hpp
+++ b/soh/soh/ShipInit.hpp
@@ -1,5 +1,4 @@
-#ifndef SHIP_INIT_HPP
-#define SHIP_INIT_HPP
+#pragma once
 
 #ifdef __cplusplus
 
@@ -71,5 +70,3 @@ struct RegisterShipInitFunc {
 };
 
 #endif // __cplusplus
-
-#endif // SHIP_INIT_HPP
diff --git a/soh/soh/ShipUtils.h b/soh/soh/ShipUtils.h
index fdcc2a9126..26ca532d4a 100644
--- a/soh/soh/ShipUtils.h
+++ b/soh/soh/ShipUtils.h
@@ -1,5 +1,4 @@
-#ifndef SHIP_UTILS_H
-#define SHIP_UTILS_H
+#pragma once
 
 #include <libultraship/libultra.h>
 
@@ -76,5 +75,3 @@ template <typename T, size_t size> void Shuffle(std::array<T, size>& arr, uint64
 }
 } // namespace ShipUtils
 #endif
-
-#endif // SHIP_UTILS_H
diff --git a/soh/soh/SohGui/BackendTypes.h b/soh/soh/SohGui/BackendTypes.h
index 85b327c51b..574bfa6ff0 100644
--- a/soh/soh/SohGui/BackendTypes.h
+++ b/soh/soh/SohGui/BackendTypes.h
@@ -1,5 +1,4 @@
-#ifndef SHIP_BACKENDTYPES_H
-#define SHIP_BACKENDTYPES_H
+#pragma once
 
 #include <fast/Fast3dWindow.h>
 #include <ship/audio/Audio.h>
@@ -16,5 +15,3 @@ static const std::map<Fast::WindowBackend, const char*> windowBackendsMap = {
     { Fast::WindowBackend::FAST3D_SDL_OPENGL, "OpenGL" },
     { Fast::WindowBackend::FAST3D_SDL_METAL, "Metal" },
 };
-
-#endif // SHIP_BACKENDTYPES_H
diff --git a/soh/soh/SohGui/ImGuiUtils.h b/soh/soh/SohGui/ImGuiUtils.h
index aaa1514085..89a61b722b 100644
--- a/soh/soh/SohGui/ImGuiUtils.h
+++ b/soh/soh/SohGui/ImGuiUtils.h
@@ -1,6 +1,3 @@
-#ifndef IM_GUI_UTILS_H
-#define IM_GUI_UTILS_H
-
 #pragma once
 
 #include <imgui.h>
@@ -68,5 +65,3 @@ extern std::map<QuestItem, SongMapEntry> songMapping;
 
 // Maps song ids to info for use in ImGui
 extern std::array<SongMapEntry, 12> vanillaSongMapping;
-
-#endif // IM_GUI_UTILS_H
\ No newline at end of file
diff --git a/soh/soh/SohGui/Menu.h b/soh/soh/SohGui/Menu.h
index 988d969a2d..4a771ad334 100644
--- a/soh/soh/SohGui/Menu.h
+++ b/soh/soh/SohGui/Menu.h
@@ -1,5 +1,4 @@
-#ifndef MENU_H
-#define MENU_H
+#pragma once
 
 #include <libultraship/libultra.h>
 #include <ship/audio/Audio.h>
@@ -68,5 +67,3 @@ class Menu : public GuiWindow {
     UIWidgets::Colors menuThemeIndex;
 };
 } // namespace Ship
-
-#endif // MENU_H
diff --git a/soh/soh/SohGui/MenuTypes.h b/soh/soh/SohGui/MenuTypes.h
index a1a074e83d..818381e42c 100644
--- a/soh/soh/SohGui/MenuTypes.h
+++ b/soh/soh/SohGui/MenuTypes.h
@@ -1,5 +1,4 @@
-#ifndef MENUTYPES_H
-#define MENUTYPES_H
+#pragma once
 
 #include <variant>
 
@@ -319,5 +318,3 @@ struct RegisterMenuUpdateFunc {
         menuUpdateFuncs[sectionName][sidebarName].push_back(updateFunc);
     }
 };
-
-#endif // MENUTYPES_H
diff --git a/soh/soh/SohGui/ResolutionEditor.h b/soh/soh/SohGui/ResolutionEditor.h
index 55f728ce03..18531978cb 100644
--- a/soh/soh/SohGui/ResolutionEditor.h
+++ b/soh/soh/SohGui/ResolutionEditor.h
@@ -1,10 +1,7 @@
-#ifndef RESOLUTIONEDITOR_H
-#define RESOLUTIONEDITOR_H
+#pragma once
 
 namespace SohGui {
 bool IsDroppingFrames();
 void RegisterResolutionWidgets();
 void UpdateResolutionVars();
 } // namespace SohGui
-
-#endif // RESOLUTIONEDITOR_H
diff --git a/soh/soh/SohGui/SohGui.hpp b/soh/soh/SohGui/SohGui.hpp
index 8c5129fee9..ca3032f891 100644
--- a/soh/soh/SohGui/SohGui.hpp
+++ b/soh/soh/SohGui/SohGui.hpp
@@ -5,8 +5,7 @@
 //  Created by David Chavez on 24.08.22.
 //
 
-#ifndef SohGui_hpp
-#define SohGui_hpp
+#pragma once
 
 #include "SohMenu.h"
 #include "soh/Enhancements/audio/AudioEditor.h"
@@ -49,5 +48,3 @@ void DrawStartingItemsMenu(WidgetInfo& info);
 } // namespace SohGui
 
 #define THEME_COLOR SohGui::GetMenuThemeColor()
-
-#endif /* SohGui_hpp */
diff --git a/soh/soh/SohGui/SohMenu.h b/soh/soh/SohGui/SohMenu.h
index 9cae3bd240..feec116adf 100644
--- a/soh/soh/SohGui/SohMenu.h
+++ b/soh/soh/SohGui/SohMenu.h
@@ -1,5 +1,4 @@
-#ifndef SOHMENU_H
-#define SOHMENU_H
+#pragma once
 
 #include "Menu.h"
 
@@ -52,5 +51,3 @@ class SohMenu : public Ship::Menu {
     bool mMenuElementsInitialized = false;
 };
 } // namespace SohGui
-
-#endif // SOHMENU_H
diff --git a/soh/soh/SohGui/UIWidgetOptions.hpp b/soh/soh/SohGui/UIWidgetOptions.hpp
index 7b5e66b595..9d6c187389 100644
--- a/soh/soh/SohGui/UIWidgetOptions.hpp
+++ b/soh/soh/SohGui/UIWidgetOptions.hpp
@@ -1,5 +1,4 @@
-#ifndef UIWidgetOptions_hpp
-#define UIWidgetOptions_hpp
+#pragma once
 
 #include <map>
 #include <memory>
@@ -589,5 +588,4 @@ struct InputOptions : WidgetOptions {
         return *this;
     }
 };
-};     // namespace UIWidgets
-#endif /* UIWidgetOptions_hpp */
+}; // namespace UIWidgets
diff --git a/soh/soh/SohGui/UIWidgets.hpp b/soh/soh/SohGui/UIWidgets.hpp
index 3e90bcebcd..c8961487f8 100644
--- a/soh/soh/SohGui/UIWidgets.hpp
+++ b/soh/soh/SohGui/UIWidgets.hpp
@@ -1,5 +1,4 @@
-#ifndef UIWidgets2_hpp
-#define UIWidgets2_hpp
+#pragma once
 
 #include "UIWidgetOptions.hpp"
 
@@ -552,5 +551,3 @@ ImVec4 GetRandomValue(uint64_t* state = nullptr);
 
 Color_RGBA8 RGBA8FromVec(ImVec4 vec);
 ImVec4 VecFromRGBA8(Color_RGBA8 color);
-
-#endif /* UIWidgets_hpp */
diff --git a/soh/soh/config/ConfigUpdaters.h b/soh/soh/config/ConfigUpdaters.h
index 069c4ee0ec..189bf99d62 100644
--- a/soh/soh/config/ConfigUpdaters.h
+++ b/soh/soh/config/ConfigUpdaters.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <ship/config/Config.h>
 
 namespace SOH {
diff --git a/soh/soh/cvar_prefixes.h b/soh/soh/cvar_prefixes.h
index 395fe2bbea..c9183a4d09 100644
--- a/soh/soh/cvar_prefixes.h
+++ b/soh/soh/cvar_prefixes.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #define CVAR_RANDOMIZER_ENHANCEMENT(var) CVAR_PREFIX_RANDOMIZER_ENHANCEMENT "." var
 #define CVAR_RANDOMIZER_SETTING(var) CVAR_PREFIX_RANDOMIZER_SETTING "." var
 #define CVAR_COSMETIC(var) CVAR_PREFIX_COSMETIC "." var
diff --git a/soh/soh/framebuffer_effects.h b/soh/soh/framebuffer_effects.h
index badbc38589..60ffbf428a 100644
--- a/soh/soh/framebuffer_effects.h
+++ b/soh/soh/framebuffer_effects.h
@@ -1,5 +1,4 @@
-#ifndef FRAMEBUFFER_EFFECTS_H
-#define FRAMEBUFFER_EFFECTS_H
+#pragma once
 
 #include <libultraship/libultra.h>
 
@@ -13,5 +12,3 @@ void FB_CopyToFramebuffer(Gfx** gfxp, s32 fb_src, s32 fb_dest, u8 oncePerFrame,
 void FB_WriteFramebufferSliceToCPU(Gfx** gfxp, void* buffer, u8 byteSwap);
 void FB_DrawFromFramebuffer(Gfx** gfxp, s32 fb, u8 alpha);
 void FB_DrawFromFramebufferScaled(Gfx** gfxp, s32 fb, u8 alpha, float scaleX, float scaleY);
-
-#endif // FRAMEBUFFER_EFFECTS_H
diff --git a/soh/soh/mq_asset_hacks.h b/soh/soh/mq_asset_hacks.h
index 4ffcecb5dc..c12f5b2dde 100644
--- a/soh/soh/mq_asset_hacks.h
+++ b/soh/soh/mq_asset_hacks.h
@@ -1,5 +1,4 @@
-#ifndef MQ_ASSET_HACKS_H
-#define MQ_ASSET_HACKS_H
+#pragma once
 
 #include "align_asset_macro.h"
 
@@ -100,5 +99,3 @@ void* sSpiritTempleEntranceTextures_MQ[] = {
     gSpiritTempleDayEntranceTex_MQ,
     gSpiritTempleNightEntranceTex_MQ,
 };
-
-#endif
diff --git a/soh/soh/resource/logging/PathLogger.h b/soh/soh/resource/logging/PathLogger.h
index 23f4f0d30f..f9bfcb2527 100644
--- a/soh/soh/resource/logging/PathLogger.h
+++ b/soh/soh/resource/logging/PathLogger.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <ship/resource/Resource.h>
 #include "soh/OTRGlobals.h"
 #include "soh/cvar_prefixes.h"
diff --git a/soh/soh/resource/logging/SceneCommandLoggers.h b/soh/soh/resource/logging/SceneCommandLoggers.h
index 64dc1d9952..d5790044d4 100644
--- a/soh/soh/resource/logging/SceneCommandLoggers.h
+++ b/soh/soh/resource/logging/SceneCommandLoggers.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <ship/resource/Resource.h>
 #include "soh/OTRGlobals.h"
 #include "soh/cvar_prefixes.h"