diff --git a/libavcodec/i386/dsputil_mmx_avg.h b/libavcodec/i386/dsputil_mmx_avg.h
index 703cd0f2ca5d9cfe3fcde720f952b6541fc234d8..0178144e97446538fef54853197a677fb9378c78 100644
--- a/libavcodec/i386/dsputil_mmx_avg.h
+++ b/libavcodec/i386/dsputil_mmx_avg.h
@@ -290,7 +290,7 @@ static void DEF(avg_pixels_xy2)(UINT8 *block, const UINT8 *pixels, int line_size
 	"addl %%eax, %2			\n\t"
 	"subl $4, %0			\n\t"
 	"jnz 1b				\n\t"
-	:"+g"(h), "+D"(pixels), "+S"(block)
+	:"+g"(h), "+S"(pixels), "+D"(block)
 	:"r" (line_size)
 	:"%eax",  "memory");
 }