diff --git a/testwebsock.php b/testwebsock.php
index ee0db75..e98bf09 100644
--- a/testwebsock.php
+++ b/testwebsock.php
@@ -5,7 +5,7 @@
 
 class echoServer extends WebSocketServer {
 
-  function __construct($addr, $port, $bufferLength) {
+  function __construct($addr, $port, $bufferLength = 2048) {
     parent::__construct($addr, $port, $bufferLength);
     $this->userClass = 'MyUser';
   }