diff --git a/libpostproc/postprocess.c b/libpostproc/postprocess.c
index b34943f983..fb18776f94 100644
--- a/libpostproc/postprocess.c
+++ b/libpostproc/postprocess.c
@@ -1000,7 +1000,7 @@ void  pp_postprocess(const uint8_t * src[3], const int srcStride[3],
     if((pict_type&7)!=3){
         if (QPStride >= 0){
             int i;
-            const int count= mbHeight * QPStride;
+            const int count= mbHeight * FFMAX(QPStride, mbWidth);
             for(i=0; i<(count>>2); i++){
                 ((uint32_t*)c->nonBQPTable)[i] = ((const uint32_t*)QP_store)[i] & 0x3F3F3F3F;
             }
diff --git a/tests/ref/fate/filter-pp3 b/tests/ref/fate/filter-pp3
index ccf2eebc62..1af87610c8 100644
--- a/tests/ref/fate/filter-pp3
+++ b/tests/ref/fate/filter-pp3
@@ -1 +1 @@
-pp3                 39af1a30d0ea0e906df264773adfcaa6
+pp3                 c8277ef31ab01bad51356841c9634522