diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
index c330efddcb..65d164d81c 100644
--- a/libavcodec/h264_ps.c
+++ b/libavcodec/h264_ps.c
@@ -787,37 +787,6 @@ int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avct
     if (pps->slice_group_count > 1) {
         pps->mb_slice_group_map_type = get_ue_golomb(gb);
         av_log(avctx, AV_LOG_ERROR, "FMO not supported\n");
-        switch (pps->mb_slice_group_map_type) {
-        case 0:
-#if 0
-    |       for (i = 0; i <= num_slice_groups_minus1; i++)  |   |      |
-    |           run_length[i]                               |1  |ue(v) |
-#endif
-            break;
-        case 2:
-#if 0
-    |       for (i = 0; i < num_slice_groups_minus1; i++) { |   |      |
-    |           top_left_mb[i]                              |1  |ue(v) |
-    |           bottom_right_mb[i]                          |1  |ue(v) |
-    |       }                                               |   |      |
-#endif
-            break;
-        case 3:
-        case 4:
-        case 5:
-#if 0
-    |       slice_group_change_direction_flag               |1  |u(1)  |
-    |       slice_group_change_rate_minus1                  |1  |ue(v) |
-#endif
-            break;
-        case 6:
-#if 0
-    |       slice_group_id_cnt_minus1                       |1  |ue(v) |
-    |       for (i = 0; i <= slice_group_id_cnt_minus1; i++)|   |      |
-    |           slice_group_id[i]                           |1  |u(v)  |
-#endif
-            break;
-        }
     }
     pps->ref_count[0] = get_ue_golomb(gb) + 1;
     pps->ref_count[1] = get_ue_golomb(gb) + 1;
diff --git a/libavcodec/h264_refs.c b/libavcodec/h264_refs.c
index ad296753c3..af70829594 100644
--- a/libavcodec/h264_refs.c
+++ b/libavcodec/h264_refs.c
@@ -846,15 +846,6 @@ int ff_h264_decode_ref_pic_marking(H264SliceContext *sl, GetBitContext *gb,
                     mmco[i].short_pic_num =
                         (sl->curr_pic_num - get_ue_golomb_long(gb) - 1) &
                             (sl->max_pic_num - 1);
-#if 0
-                    if (mmco[i].short_pic_num >= h->short_ref_count ||
-                        !h->short_ref[mmco[i].short_pic_num]) {
-                        av_log(s->avctx, AV_LOG_ERROR,
-                               "illegal short ref in memory management control "
-                               "operation %d\n", mmco);
-                        return -1;
-                    }
-#endif
                 }
                 if (opcode == MMCO_SHORT2LONG || opcode == MMCO_LONG2UNUSED ||
                     opcode == MMCO_LONG || opcode == MMCO_SET_MAX_LONG) {