diff --git a/libavformat/mux.c b/libavformat/mux.c
index b08d48b5fb..44d5e5d1c0 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -1067,10 +1067,7 @@ int ff_interleaved_peek(AVFormatContext *s, int stream,
 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
 {
     if (s->oformat->interleave_packet) {
-        int ret = s->oformat->interleave_packet(s, out, in, flush);
-        if (in)
-            av_packet_unref(in);
-        return ret;
+        return s->oformat->interleave_packet(s, out, in, flush);
     } else
         return ff_interleave_packet_per_dts(s, out, in, flush);
 }