diff --git a/libswscale/x86/swscale.c b/libswscale/x86/swscale.c
index a06d1f2102..d611b76c73 100644
--- a/libswscale/x86/swscale.c
+++ b/libswscale/x86/swscale.c
@@ -201,7 +201,7 @@ static void yuv2yuvX_sse3(const int16_t *filter, int filterSize,
                            const int16_t **src, uint8_t *dest, int dstW,
                            const uint8_t *dither, int offset)
 {
-    if(((int)dest) & 15){
+    if(((uintptr_t)dest) & 15){
         yuv2yuvX_mmxext(filter, filterSize, src, dest, dstW, dither, offset);
         return;
     }