diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
index c6d78a5ae9..a2b7337224 100644
--- a/libavfilter/vf_yadif.c
+++ b/libavfilter/vf_yadif.c
@@ -221,6 +221,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
     yadif->prev = yadif->cur;
     yadif->cur  = yadif->next;
     yadif->next = picref;
+    link->cur_buf = NULL;
 
     if (!yadif->cur)
         return 0;