diff --git a/libpostproc/postprocess.h b/libpostproc/postprocess.h
index 1803959cd3..b9395c58a8 100644
--- a/libpostproc/postprocess.h
+++ b/libpostproc/postprocess.h
@@ -27,6 +27,8 @@
  *     external api for the pp stuff
  */
 
+#include "avutil.h"
+
 #define LIBPOSTPROC_VERSION_TRIPLET 51,1,0
 
 #define LIBPOSTPROC_VERSION_INT AV_VERSION_INT(LIBPOSTPROC_VERSION_TRIPLET)