diff --git a/src/Ratchet/App.php b/src/Ratchet/App.php
index f378534..da41838 100644
--- a/src/Ratchet/App.php
+++ b/src/Ratchet/App.php
@@ -62,7 +62,7 @@ class App {
      * @param LoopInterface $loop       Specific React\EventLoop to bind the application to. null will create one for you.
      */
     public function __construct($httpHost = 'localhost', $port = 8080, $address = '127.0.0.1', LoopInterface $loop = null) {
-        if (extension_loaded('xdebug')) {
+        if (extension_loaded('xdebug') && getenv('RATCHET_DISABLE_XDEBUG_WARN') === false) {
             trigger_error('XDebug extension detected. Remember to disable this if performance testing or going live!', E_USER_WARNING);
         }