diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index da54b51dea..462a802a20 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -139,6 +139,8 @@ class FrameworkExtension extends Extension
         }
 
         if ($container->getParameter('kernel.debug')) {
+            $definition->replaceArgument(2, -1 & ~(E_COMPILE_ERROR | E_PARSE | E_ERROR | E_CORE_ERROR | E_RECOVERABLE_ERROR));
+
             $loader->load('debug.xml');
 
             $definition = $container->findDefinition('http_kernel');
@@ -150,7 +152,7 @@ class FrameworkExtension extends Extension
             $container->setDefinition('debug.event_dispatcher.parent', $definition);
             $container->setAlias('event_dispatcher', 'debug.event_dispatcher');
         } else {
-            $definition->replaceArgument(2, E_COMPILE_ERROR | E_PARSE | E_ERROR | E_CORE_ERROR);
+            $definition->replaceArgument(1, null);
         }
 
         $this->addClassesToCompile(array(