diff --git a/src/bundle/Core/DependencyInjection/Compiler/SecurityPass.php b/src/bundle/Core/DependencyInjection/Compiler/SecurityPass.php
index 8c3a61cdc6..202b2c3822 100644
--- a/src/bundle/Core/DependencyInjection/Compiler/SecurityPass.php
+++ b/src/bundle/Core/DependencyInjection/Compiler/SecurityPass.php
@@ -4,6 +4,7 @@
  * @copyright Copyright (C) Ibexa AS. All rights reserved.
  * @license For full copyright and license information view LICENSE file distributed with this source code.
  */
+declare(strict_types=1);
 
 namespace Ibexa\Bundle\Core\DependencyInjection\Compiler;