diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 2279e446fb..0e91e92eb7 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -814,6 +814,8 @@ static void rtsp_send_cmd(AVFormatContext *s,
     }
     if (content_ptr)
         *content_ptr = content;
+    else
+        av_free(content);
 }