diff --git a/programs/media/ac97snd/ac97snd/ac97wav.c b/programs/media/ac97snd/ac97snd/ac97wav.c
index 065ecb83f8..d623864c68 100644
--- a/programs/media/ac97snd/ac97snd/ac97wav.c
+++ b/programs/media/ac97snd/ac97snd/ac97wav.c
@@ -1278,7 +1278,7 @@ void uint2str(unsigned int value, char *string)
 
 
 ///*********
-void *memmove ( void * dst, void * src, unsigned int count)  /* uFMOD integration */
+void *__cdecl memmove ( void * dst, const void * src, unsigned int count)  /* uFMOD integration */
 { void *ret;
   ret = dst;