diff --git a/libpostproc/postprocess.c b/libpostproc/postprocess.c
index 92cc4367d0..3b86f93980 100644
--- a/libpostproc/postprocess.c
+++ b/libpostproc/postprocess.c
@@ -76,6 +76,7 @@ try to unroll inner for(x=0 ... loop to avoid these damn if(x ... checks
 #include "config.h"
 #include "libavutil/avutil.h"
 #include "libavutil/avassert.h"
+#include "libavutil/intreadwrite.h"
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -997,7 +998,7 @@ void  pp_postprocess(const uint8_t * src[3], const int srcStride[3],
             int i;
             const int count= FFMAX(mbHeight * QPStride, mbWidth);
             for(i=0; i<(count>>2); i++){
-                ((uint32_t*)c->nonBQPTable)[i] = ((const uint32_t*)QP_store)[i] & 0x3F3F3F3F;
+                AV_WN32(c->nonBQPTable + (i<<2), AV_RN32(QP_store + (i<<2)) & 0x3F3F3F3F);
             }
             for(i<<=2; i<count; i++){
                 c->nonBQPTable[i] = QP_store[i] & 0x3F;