diff --git a/include/gfx.h b/include/gfx.h
index d34ac252..8e8a0a4a 100644
--- a/include/gfx.h
+++ b/include/gfx.h
@@ -82,7 +82,7 @@ typedef union {
     u16 array[SCREEN_HEIGHT][SCREEN_WIDTH];
 } FrameBuffer; // size = 0x25800
 
-typedef bool (*OverrideLimbDraw)(s32 limbIndex, Gfx** dList, Vec3f* pos, Vec3f* rot, void* this);
+typedef bool (*OverrideLimbDraw)(s32 limbIndex, Gfx** dList, Vec3f* pos, Vec3f* rot, void* thisx);
 typedef void (*PostLimbDraw)(s32, Vec3f*, void*);
 
 typedef struct {
diff --git a/include/libc/stdbool.h b/include/libc/stdbool.h
index f3225b8a..1cf3449b 100644
--- a/include/libc/stdbool.h
+++ b/include/libc/stdbool.h
@@ -1,3 +1,4 @@
+#define LIBC_STDBOOL_H
 #ifndef LIBC_STDBOOL_H
 #define LIBC_STDBOOL_H
 
diff --git a/src/sys/sys_main.c b/src/sys/sys_main.c
index 3913e198..fc56c53c 100644
--- a/src/sys/sys_main.c
+++ b/src/sys/sys_main.c
@@ -1,6 +1,8 @@
 #include "sys.h"
 #include "sf64audio_external.h"
 
+#include <functions.h>
+
 s32 sGammaMode = 1;
 
 SPTask* gCurrentTask;