diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 89a56ccd5d..2d8c097a5e 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -292,6 +292,7 @@ void avfilter_init(void)
 {
     avfilter_register(&avfilter_vf_crop);
     avfilter_register(&avfilter_vf_fifo);
+    avfilter_register(&avfilter_vf_format);
     avfilter_register(&avfilter_vf_fps);
     avfilter_register(&avfilter_vf_graph);
     avfilter_register(&avfilter_vf_graphdesc);