diff --git a/src/vsuni.c b/src/vsuni.c
index b75f3fc..2771043 100644
--- a/src/vsuni.c
+++ b/src/vsuni.c
@@ -288,7 +288,7 @@ VSUNIENTRY VSUniGames[] =
 	{ 0 }
 };
 
-void FCEU_VSUniCheck(uint64 md5partial, int *MapperNo, uint8 *Mirroring) {
+void FCEU_VSUniCheck(uint64 md5partial, int *MapperNo, int *Mirroring) {
 	VSUNIENTRY *vs = VSUniGames;
 
 	while (vs->name) {
diff --git a/src/vsuni.h b/src/vsuni.h
index 8248885..e84141c 100644
--- a/src/vsuni.h
+++ b/src/vsuni.h
@@ -2,7 +2,7 @@
 #define _FCEU_VSUNI_H
 
 void FCEU_VSUniPower(void);
-void FCEU_VSUniCheck(uint64 md5partial, int *, uint8 *);
+void FCEU_VSUniCheck(uint64 md5partial, int *, int *);
 void FCEU_VSUniDraw(uint8 *XBuf);
 
 void FCEU_VSUniToggleDIP(int);	/* For movies and netplay */