diff --git a/libmpcodecs/dec_video.h b/libmpcodecs/dec_video.h
index c2eb34b8db..8c739fea95 100644
--- a/libmpcodecs/dec_video.h
+++ b/libmpcodecs/dec_video.h
@@ -1,7 +1,5 @@
 
 // dec_video.c:
-extern int video_read_properties(sh_video_t *sh_video);
-
 extern void vfm_help(void);
 
 extern int init_best_video_codec(sh_video_t *sh_video,char** video_codec_list,char** video_fm_list);