diff --git a/libmpcodecs/vf_ass.c b/libmpcodecs/vf_ass.c
index f88ed99eca..9ce50cf006 100644
--- a/libmpcodecs/vf_ass.c
+++ b/libmpcodecs/vf_ass.c
@@ -23,7 +23,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdint.h>
+#include <inttypes.h>
 #include <assert.h>
 
 #include "config.h"