diff --git a/WebSocket.js b/WebSocket.js
index 06e71f9..f91cc0b 100644
--- a/WebSocket.js
+++ b/WebSocket.js
@@ -220,6 +220,9 @@ Ext.define('Ext.ux.WebSocket', {
      */
     constructor: function (cfg) {
         var me = this;
+        
+        // Prevent messageQueue to be shared among websockets.
+        me.messageQueue = [];
 
         // Raises an error if no url is given
         if (Ext.isEmpty(cfg)) {