1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_maskfun.c b/libavfilter/vf_maskfun.c
index 0a6d17f7af..da1cfe91cb 100644
--- a/libavfilter/vf_maskfun.c
+++ b/libavfilter/vf_maskfun.c
@@ -294,9 +294,9 @@ static const AVFilterPad maskfun_inputs[] = {
     {
         .name           = "default",
         .type           = AVMEDIA_TYPE_VIDEO,
+        .flags          = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
         .filter_frame   = filter_frame,
         .config_props   = config_input,
-        .needs_writable = 1,
     },
     { NULL }
 };