diff --git a/public/app_dev.php b/public/app_dev.php
index a98b535..10b02b3 100644
--- a/public/app_dev.php
+++ b/public/app_dev.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony-Util package.
+ *
+ * (c) Jean-Bernard Addor
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Debug\Debug;