diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index 6851b7e1f4..72b8dba741 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -115,6 +115,9 @@ RMStream *ff_rm_alloc_rmstream (void)
 
 void ff_rm_free_rmstream (RMStream *rms)
 {
+    if (!rms)
+        return;
+
     av_packet_unref(&rms->pkt);
 }