diff --git a/src/Silex/Application.php b/src/Silex/Application.php
index aafe2e7ae..7463936f4 100644
--- a/src/Silex/Application.php
+++ b/src/Silex/Application.php
@@ -87,7 +87,7 @@ public function __construct()
 
         $this['dispatcher_class'] = 'Symfony\\Component\\EventDispatcher\\EventDispatcher';
         $this['dispatcher'] = $this->share(function () use ($app) {
-            $dispatcher = new $this['dispatcher_class']();
+            $dispatcher = new $app['dispatcher_class']();
             $dispatcher->addSubscriber($app);
 
             $urlMatcher = new LazyUrlMatcher(function () use ($app) {