diff --git a/libavfilter/vf_null.c b/libavfilter/vf_null.c
index b22779d358..eafa268948 100644
--- a/libavfilter/vf_null.c
+++ b/libavfilter/vf_null.c
@@ -31,8 +31,6 @@ static const AVFilterPad avfilter_vf_null_inputs[] = {
         .name             = "default",
         .type             = AVMEDIA_TYPE_VIDEO,
         .get_video_buffer = ff_null_get_video_buffer,
-        .start_frame      = ff_null_start_frame,
-        .end_frame        = ff_null_end_frame
     },
     { NULL }
 };