diff --git a/libavutil/md5.c b/libavutil/md5.c
index b0c678bc27..74e109b72d 100644
--- a/libavutil/md5.c
+++ b/libavutil/md5.c
@@ -30,7 +30,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <string.h>
+#include <stdint.h>
 #include "bswap.h"
 #include "md5.h"