diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index f8a8b9454a..7cadbee452 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -5746,6 +5746,7 @@ decode_intra_mb:
         // All coeffs are present
         memset(h->non_zero_count[mb_xy], 16, 16);
         s->current_picture.mb_type[mb_xy]= mb_type;
+        h->last_qscale_diff = 0;
         return 0;
     }