diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 5aec139374..b64448d009 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -22,6 +22,8 @@
 #ifndef FFMPEG_AVFILTER_H
 #define FFMPEG_AVFILTER_H
 
+#define LIBAVFILTER_VERSION      0.0.0
+
 #include <stddef.h>
 #include "avcodec.h"