diff --git a/lib/index.js b/lib/index.js
index b35d1b1a9..66d8d0770 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -161,11 +161,11 @@ Server.prototype.path = function(v){
 Server.prototype.adapter = function(v){
   if (!arguments.length) return this._adapter;
   this._adapter = v;
-  for (var i in this.nsps) {
-    if (this.nsps.hasOwnProperty(i)) {
-      this.nsps[i].initAdapter();
-    }
+  var prop=Object.keys(this.nsps);
+  for (var i=0; i<prop.length; i++){
+    prop[i].initAdapter();
   }
+
   return this;
 };
 
@@ -327,7 +327,7 @@ Server.prototype.onconnection = function(conn){
  */
 
 Server.prototype.of = function(name, fn){
-  if (String(name)[0] !== '/') name = '/' + name;
+  if ((name+'')[0] !== '/') name = '/' + name;
   
   var nsp = this.nsps[name];
   if (!nsp) {