diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 3e2d60ad03..5c27751a08 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -236,6 +236,7 @@ void avfilter_register(AVFilter *filter)
 void avfilter_init(void)
 {
     avfilter_register(&vsrc_dummy);
+    avfilter_register(&vsrc_ppm);
     avfilter_register(&vf_crop);
     avfilter_register(&vf_passthrough);
     avfilter_register(&vf_slicify);