diff --git a/libavformat/internal.h b/libavformat/internal.h
index fee70e8e3d..c6adf7b872 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -24,6 +24,9 @@
 #include <stdint.h>
 
 #include "libavutil/bprint.h"
+
+#include "libavcodec/avcodec.h"
+
 #include "avformat.h"
 #include "os_support.h"