diff --git a/libvo/aclib_template.c b/libvo/aclib_template.c
index 4ec6c492fb..73b3ce01b2 100644
--- a/libvo/aclib_template.c
+++ b/libvo/aclib_template.c
@@ -249,8 +249,8 @@ static void * RENAME(fast_memcpy)(void * to, const void * from, size_t len)
 		MOVNTQ" %%mm6, 48(%1)\n"
 		MOVNTQ" %%mm7, 56(%1)\n"
 		:: "r" (from), "r" (to) : "memory");
-		((const unsigned char *)from)+=64;
-		((unsigned char *)to)+=64;
+		from=((const unsigned char *)from)+64;
+		to=((unsigned char *)to)+64;
 	}
 
 //	printf(" %d %d\n", (int)from&1023, (int)to&1023);
@@ -338,8 +338,8 @@ static void * RENAME(fast_memcpy)(void * to, const void * from, size_t len)
 		MOVNTQ" %%mm6, 48(%1)\n"
 		MOVNTQ" %%mm7, 56(%1)\n"
 		:: "r" (from), "r" (to) : "memory");
-		((const unsigned char *)from)+=64;
-		((unsigned char *)to)+=64;
+		from=((const unsigned char *)from)+64;
+		to=((unsigned char *)to)+64;
 	}
 
 #endif /* Have SSE */