diff --git a/libavformat/mov.c b/libavformat/mov.c
index 675b915906..cd3f5bffcf 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -7843,8 +7843,10 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
         aax_filter(pkt->data, pkt->size, mov);
 
     ret = cenc_filter(mov, st, sc, pkt, current_index);
-    if (ret < 0)
+    if (ret < 0) {
+        av_packet_unref(pkt);
         return ret;
+    }
 
     return 0;
 }