diff --git a/libavfilter/vf_deblock.c b/libavfilter/vf_deblock.c
index 229770908a..39de0d2d11 100644
--- a/libavfilter/vf_deblock.c
+++ b/libavfilter/vf_deblock.c
@@ -410,4 +410,5 @@ AVFilter ff_vf_deblock = {
     .query_formats = query_formats,
     .inputs        = inputs,
     .outputs       = outputs,
+    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
 };