diff --git a/libvo/fastmemcpy.h b/libvo/fastmemcpy.h
index a28f495486..f03287564f 100644
--- a/libvo/fastmemcpy.h
+++ b/libvo/fastmemcpy.h
@@ -27,7 +27,7 @@
 void * fast_memcpy(void * to, const void * from, size_t len);
 void * mem2agpcpy(void * to, const void * from, size_t len);
 
-#if ! defined(CONFIG_FASTMEMCPY) && ! (HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW /* || HAVE_SSE || HAVE_SSE2 */)
+#if ! defined(CONFIG_FASTMEMCPY) || ! (HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW /* || HAVE_SSE || HAVE_SSE2 */)
 #define mem2agpcpy(a,b,c) memcpy(a,b,c)
 #define fast_memcpy(a,b,c) memcpy(a,b,c)
 #endif