diff --git a/public/js/index.js b/public/js/index.js
index 90a3daf..dff278c 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -2250,7 +2250,7 @@ var socket = io.connect({
 var on = socket.on;
 socket.on = function () {
     if (!checkLoginStateChanged() && !needRefresh)
-        on.apply(socket, arguments);
+        return on.apply(socket, arguments);
 };
 var emit = socket.emit;
 socket.emit = function () {