diff --git a/trunk/research/players/srs_player.html b/trunk/research/players/srs_player.html
index 719d28aff6..e0cb29291c 100755
--- a/trunk/research/players/srs_player.html
+++ b/trunk/research/players/srs_player.html
@@ -181,6 +181,7 @@
 
     var start_play = function (r) {
         stopPlayers();
+        if (!r) return;
 
         // Start play HTTP-FLV.
         if (r.stream.indexOf('.flv') > 0) {