diff --git a/lib/browser.js b/lib/browser.js
index a2979e38..af5550b8 100644
--- a/lib/browser.js
+++ b/lib/browser.js
@@ -1,16 +1,32 @@
 var _global = (function() { return this; })();
+var nativeWebSocket = _global.WebSocket || _global.MozWebSocket;
 
 
 /**
- * W3CWebSocket constructor.
+ * Expose a W3C WebSocket class with just one or two arguments.
  */
-var W3CWebSocket = _global.WebSocket || _global.MozWebSocket;
+function W3CWebSocket(uri, protocols) {
+	var instance;
+
+	if (protocols) {
+		instance = new nativeWebSocket(uri, protocols);
+	}
+	else {
+		instance = new nativeWebSocket(uri);
+	}
+
+	return instance;
+}
+
+if (nativeWebSocket) {
+	W3CWebSocket.prototype = nativeWebSocket.prototype;
+}
 
 
 /**
  * Module exports.
  */
 module.exports = {
-    'w3cwebsocket' : W3CWebSocket ? W3CWebSocket : null,
+    'w3cwebsocket' : nativeWebSocket ? W3CWebSocket : null,
     'version'      : require('./version')
 };
diff --git a/test/shared/test-server.js b/test/shared/test-server.js
index a82ef50e..78a9cae0 100644
--- a/test/shared/test-server.js
+++ b/test/shared/test-server.js
@@ -10,7 +10,7 @@ function prepare(callback) {
     response.writeHead(404);
     response.end();
   });
-  
+
   wsServer = new WebSocketServer({
     httpServer: server,
     autoAcceptConnections: false,
@@ -20,7 +20,7 @@ function prepare(callback) {
     keepalive: false,
     disableNagleAlgorithm: false
   });
-  
+
   server.listen(64321, function(err) {
     if (err) {
       return callback(err);
@@ -35,7 +35,7 @@ function stopServer() {
     server.close();
   }
   catch(e) {
-    console.warn("stopServer threw", e);
+    console.warn('stopServer threw', e);
   }
 }