diff --git a/include/JSystem/JFramework/JFWSystem.h b/include/JSystem/JFramework/JFWSystem.h
index bc302239e..5c20f1556 100644
--- a/include/JSystem/JFramework/JFWSystem.h
+++ b/include/JSystem/JFramework/JFWSystem.h
@@ -19,9 +19,9 @@ struct JFWSystem {
         static u32 fifoBufSize;
         static u32 aramAudioBufSize;
         static u32 aramGraphBufSize;
-        static u32 streamPriority;
-        static u32 decompPriority;
-        static u32 aPiecePriority;
+        static s32 streamPriority;
+        static s32 decompPriority;
+        static s32 aPiecePriority;
         static ResFONT* systemFontRes;
         static GXRenderModeObj* renderMode;
         static u32 exConsoleBufferSize;
diff --git a/include/JSystem/JUtility/JUTGraphFifo.h b/include/JSystem/JUtility/JUTGraphFifo.h
index aab9ae642..e0205a9fc 100644
--- a/include/JSystem/JUtility/JUTGraphFifo.h
+++ b/include/JSystem/JUtility/JUTGraphFifo.h
@@ -31,8 +31,8 @@ private:
     /* 0x10 */ u8 field_0x10[0xC];
 };
 
-inline void JUTCreateFifo(u32 bufSize) {
-    new JUTGraphFifo(bufSize);
+inline JUTGraphFifo* JUTCreateFifo(u32 bufSize) {
+    return new JUTGraphFifo(bufSize);
 }
 
 #endif /* JUTGRAPHFIFO_H */
diff --git a/src/JSystem/JFramework/JFWSystem.cpp b/src/JSystem/JFramework/JFWSystem.cpp
index a1bdcfec9..35016adcb 100644
--- a/src/JSystem/JFramework/JFWSystem.cpp
+++ b/src/JSystem/JFramework/JFWSystem.cpp
@@ -26,9 +26,9 @@ u32 JFWSystem::CSetUpParam::sysHeapSize = 0x400000;
 u32 JFWSystem::CSetUpParam::fifoBufSize = 0x40000;
 u32 JFWSystem::CSetUpParam::aramAudioBufSize = 0x800000;
 u32 JFWSystem::CSetUpParam::aramGraphBufSize = 0x600000;
-u32 JFWSystem::CSetUpParam::streamPriority = 8;
-u32 JFWSystem::CSetUpParam::decompPriority = 7;
-u32 JFWSystem::CSetUpParam::aPiecePriority = 6;
+s32 JFWSystem::CSetUpParam::streamPriority = 8;
+s32 JFWSystem::CSetUpParam::decompPriority = 7;
+s32 JFWSystem::CSetUpParam::aPiecePriority = 6;
 ResFONT* JFWSystem::CSetUpParam::systemFontRes = (ResFONT*)JUTResFONT_Ascfont_fix12;
 GXRenderModeObj* JFWSystem::CSetUpParam::renderMode = &GXNtsc480IntDf;
 u32 JFWSystem::CSetUpParam::exConsoleBufferSize = 0x24F8;
@@ -65,7 +65,9 @@ void JFWSystem::init() {
 
     sInitCalled = true;
 
-    JKRAram::create(CSetUpParam::aramAudioBufSize,CSetUpParam::aramGraphBufSize, CSetUpParam::streamPriority,CSetUpParam::decompPriority, CSetUpParam::aPiecePriority);
+    JKRAram::create(CSetUpParam::aramAudioBufSize, CSetUpParam::aramGraphBufSize,
+                    CSetUpParam::streamPriority,CSetUpParam::decompPriority,
+                    CSetUpParam::aPiecePriority);
     mainThread = new JKRThread(OSGetCurrentThread(), 4);
 
     JUTVideo::createManager(CSetUpParam::renderMode);
diff --git a/src/m_Do/m_Do_graphic.cpp b/src/m_Do/m_Do_graphic.cpp
index 819e468ed..4385c7fa1 100644
--- a/src/m_Do/m_Do_graphic.cpp
+++ b/src/m_Do/m_Do_graphic.cpp
@@ -679,7 +679,7 @@ s16 mCaptureCenterY = 180;
 GXColor mCaptureMonoColor0 = { 0x00, 0x00, 0x00, 0x00 };
 GXColor mCaptureMonoColor1 = { 0xFF, 0xFF, 0xFF, 0xFF };
 u32 mCaptureThreadStackSize = 0x2000;
-u32 mCaptureThreadPriority = 30;
+s32 mCaptureThreadPriority = 30;
 
 /* 80009BBC-80009BE0       .text mCaptureAlarmHandler__FP7OSAlarmP9OSContext */
 void mCaptureAlarmHandler(OSAlarm*, OSContext*) {