diff --git a/KAIN2/Game/FX.H b/KAIN2/Game/FX.H
index 56b6cdabb..a14d50f66 100644
--- a/KAIN2/Game/FX.H
+++ b/KAIN2/Game/FX.H
@@ -110,7 +110,7 @@ struct _FXParticle // hashcode: 0xDD6F143E (dec: -579922882)
 	unsigned char type; // size=0, offset=13
 	short lifeTime; // size=0, offset=14
 	struct TextureMT3* texture; // size=16, offset=16
-	void* fxprim_modify_process; // size=0, offset=20
+	void (*fxprim_modify_process)(struct _FX_PRIM* fxPrim, struct _Instance* instance, struct _FXParticle* particle, struct _FXTracker* fxTracker); // size=0, offset=20
 	void* fxprim_process; // size=0, offset=24
 	short size; // size=0, offset=28
 	short primLifeTime; // size=0, offset=30
diff --git a/KAIN2/Game/PHYSOBS.C b/KAIN2/Game/PHYSOBS.C
index 842627c50..f12e06329 100644
--- a/KAIN2/Game/PHYSOBS.C
+++ b/KAIN2/Game/PHYSOBS.C
@@ -941,7 +941,7 @@ void InitPhysicalObject(struct _Instance* instance, struct GameTracker* gameTrac
 				switchProp->startAnim = 0;
 			}
 			G2EmulationInstanceSetAnimation(instance, 0, switchProp->startAnim, 0, 0);
-			G2EmulationInstanceInitSection(instance, 0, &PhysobAnimCallback, instance);
+			G2EmulationInstanceInitSection(instance, 0, PhysobAnimCallback, instance);
 			if (switchProp->Class == 7)
 			{
 				interact->Properties.family = 1024;
diff --git a/KAIN2/Game/STATE.C b/KAIN2/Game/STATE.C
index c51ea36f8..0e9a1027f 100644
--- a/KAIN2/Game/STATE.C
+++ b/KAIN2/Game/STATE.C
@@ -1011,7 +1011,7 @@ void G2EmulationSetTotalSections(struct __CharacterState* In, short Total)
 	G2EmulationInstanceSetTotalSections(In->CharacterInstance, In->TotalSections);
 }
 
-void G2EmulationInstanceInitSection(struct _Instance* instance, int CurrentSection, void* callback, void* data)
+void G2EmulationInstanceInitSection(struct _Instance* instance, int CurrentSection, long (*callback)(struct _G2Anim_Type* anim, int sectionID, enum _G2AnimCallbackMsg_Enum message, long messageDataA, long messageDataB, void* data), void* data)
 {
 	struct _G2AnimSection_Type* animSection;
 
diff --git a/KAIN2/Game/STATE.H b/KAIN2/Game/STATE.H
index 27c300a8b..f5e66243e 100644
--- a/KAIN2/Game/STATE.H
+++ b/KAIN2/Game/STATE.H
@@ -195,7 +195,7 @@ extern void G2EmulationInstanceSetTotalSections(struct _Instance *instance, shor
 
 extern void G2EmulationSetTotalSections(struct __CharacterState *In, short Total); // 0x800723D4
 
-extern void G2EmulationInstanceInitSection(struct _Instance *instance, int CurrentSection, void *callback, void *data); // 0x80072404
+extern void G2EmulationInstanceInitSection(struct _Instance *instance, int CurrentSection, long (*callback)(struct _G2Anim_Type* anim, int sectionID, enum _G2AnimCallbackMsg_Enum message, long messageDataA, long messageDataB, void* data), void *data); // 0x80072404
 
 extern void G2EmulationSetInterpController_Vector(struct _Instance *instance, long segment, long type, struct _G2SVector3_Type *vec, int Frames, int Data); // 0x80072428