diff --git a/src/_ob_rabid_jar.c b/src/_ob_rabid_jar.c
index 97f4c48..c54e0cc 100644
--- a/src/_ob_rabid_jar.c
+++ b/src/_ob_rabid_jar.c
@@ -458,7 +458,7 @@ void obSendUnpackMesg(OBUnpackMesg* msg) {
 INCLUDE_ASM(const s32, "_ob_rabid_jar", func_8007ABAC);
 
 /* B030 8007AC30 */
-void UnpackProc(void) {    
+void UnpackProc(void* __unused) {    
     OBUnpackMesg *msg = NULL;
 
     while(1) {