diff --git a/lib/transports/xhr-multipart.js b/lib/transports/xhr-multipart.js
index d75ca133..69dbf92b 100644
--- a/lib/transports/xhr-multipart.js
+++ b/lib/transports/xhr-multipart.js
@@ -5,7 +5,6 @@ io.Transport['xhr-multipart'] = io.Transport.XHR.extend({
   connect: function(){
     var self = this;
     this._xhr = this._request('', 'GET');
-		this._xhr.multipart = true;
     this._xhr.onreadystatechange = function(){
       if (self._xhr.readyState == 3) self._onData(self._xhr.responseText);
       else if (self._xhr.status == 200 && self._xhr.readyState == 4) self.connect(); 
diff --git a/lib/transports/xhr.js b/lib/transports/xhr.js
index f114782d..a5b1d032 100644
--- a/lib/transports/xhr.js
+++ b/lib/transports/xhr.js
@@ -23,8 +23,9 @@
 			this._onDisconnect();
     },
     
-    _request: function(url, method){
+    _request: function(url, method, multipart){
       var req = request();
+			if (multipart) req.multipart = true;
       req.open(method || 'GET', this._prepareUrl() + (url ? '/' + url : ''));
       if (method == 'POST'){
         req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded; charset=utf-8');