diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php b/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
index 0196058642..5655595a68 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
@@ -17,6 +17,7 @@ use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 use Symfony\Component\DependencyInjection\ContainerAware;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Form\FormTypeInterface;
 use Symfony\Component\Form\Form;
 use Symfony\Component\Form\FormBuilder;