diff --git a/asm/ov00/Item/ItemManager.s b/asm/ov00/Item/ItemManager.s
index f9f76f00..e63e6ce9 100644
--- a/asm/ov00/Item/ItemManager.s
+++ b/asm/ov00/Item/ItemManager.s
@@ -3,33 +3,6 @@
 
 	.text
 
-	.global _ZN11ItemManager17UpgradeBombchuBagEv
-	thumb_func_start _ZN11ItemManager17UpgradeBombchuBagEv
-_ZN11ItemManager17UpgradeBombchuBagEv: ; 0x020ae4b0
-	push {r4, lr}
-	add r4, r0, #0
-	add r0, #0xb8
-	ldrh r0, [r0]
-	cmp r0, #2
-	bhs _020ae4ca
-	add r0, r4, #0
-	add r0, #0xb8
-	ldrh r0, [r0]
-	add r1, r0, #1
-	add r0, r4, #0
-	add r0, #0xb8
-	strh r1, [r0]
-_020ae4ca:
-	add r0, r4, #0
-	mov r1, #7
-	bl _ZNK11ItemManager10GetMaxAmmoEi
-	add r4, #0xb0
-	ldr r1, [r4]
-	strh r0, [r1, #0xe]
-	pop {r4, pc}
-	.align 2, 0
-	thumb_func_end _ZN11ItemManager17UpgradeBombchuBagEv
-
 	.global _ZN11ItemManager18func_ov00_020ae4dcEj
 	arm_func_start _ZN11ItemManager18func_ov00_020ae4dcEj
 _ZN11ItemManager18func_ov00_020ae4dcEj: ; 0x020ae4dc
diff --git a/src/00_Core/Item/ItemManager.cpp b/src/00_Core/Item/ItemManager.cpp
index b39663f2..7b7db21f 100644
--- a/src/00_Core/Item/ItemManager.cpp
+++ b/src/00_Core/Item/ItemManager.cpp
@@ -837,3 +837,8 @@ THUMB void ItemManager::UpgradeBombBag() {
     if (mBombBagSize < MAX_AMMO_UPGRADE) mBombBagSize += 1;
     (*mAmmo)[ItemFlag_BombBag] = this->GetMaxAmmo(ItemFlag_BombBag);
 }
+
+THUMB void ItemManager::UpgradeBombchuBag() {
+    if (mBombchuBagSize < MAX_AMMO_UPGRADE) mBombchuBagSize += 1;
+    (*mAmmo)[ItemFlag_BombchuBag] = this->GetMaxAmmo(ItemFlag_BombchuBag);
+}