diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index f9f6d6c83a..46f81f2d9e 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -999,7 +999,7 @@ static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame)
     int (*filter_frame)(AVFilterLink *, AVFrame *);
     AVFilterContext *dstctx = link->dst;
     AVFilterPad *dst = link->dstpad;
-    AVFrame *out;
+    AVFrame *out = NULL;
     int ret;
     AVFilterCommand *cmd= link->dst->command_queue;
     int64_t pts;