diff --git a/libavformat/utils.c b/libavformat/utils.c
index f6df49bf0f..81c7a0dd6e 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -19,8 +19,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#undef NDEBUG
-#include <assert.h>
 #include <stdarg.h>
 #include <stdint.h>