diff --git a/libswscale/output.c b/libswscale/output.c
index 6aa3112ca0..0023cd417b 100644
--- a/libswscale/output.c
+++ b/libswscale/output.c
@@ -18,7 +18,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <assert.h>
 #include <math.h>
 #include <stdint.h>
 #include <stdio.h>