diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index 7c6f4f952d..141cb02e70 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -42,9 +42,6 @@
 #include "flv.h"
 #include "mpeg4video.h"
 
-//#undef NDEBUG
-//#include <assert.h>
-
 // The defines below define the number of bits that are read at once for
 // reading vlc values. Changing these may improve speed and data cache needs
 // be aware though that decreasing them may need the number of stages that is
@@ -212,7 +209,7 @@ static int h263_decode_gob_header(MpegEncContext *s)
  */
 const uint8_t *ff_h263_find_resync_marker(const uint8_t *av_restrict p, const uint8_t *av_restrict end)
 {
-    assert(p < end);
+    av_assert2(p < end);
 
     end-=2;
     p++;
@@ -608,7 +605,7 @@ int ff_h263_decode_mb(MpegEncContext *s,
     const int xy= s->mb_x + s->mb_y * s->mb_stride;
     int cbpb = 0, pb_mv_count = 0;
 
-    assert(!s->h263_pred);
+    av_assert2(!s->h263_pred);
 
     if (s->pict_type == AV_PICTURE_TYPE_P) {
         do{
@@ -748,7 +745,7 @@ int ff_h263_decode_mb(MpegEncContext *s,
         }else
             cbp=0;
 
-        assert(!s->mb_intra);
+        av_assert2(!s->mb_intra);
 
         if(IS_QUANT(mb_type)){
             h263_decode_dquant(s);