diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 3174401cfd..5145343887 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -106,10 +106,10 @@ int ff_h264_check_intra4x4_pred_mode(H264Context *h){
 
 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma){
     MpegEncContext * const s = &h->s;
-    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
-    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
+    static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
+    static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
 
-    if(mode > 6U) {
+    if(mode > 3U) {
         av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
         return -1;
     }