diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
index abfaa1d07404a..e58068900fc8f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Compiler/AddConstraintValidatorsPassTest.php
@@ -9,6 +9,8 @@
  * file that was distributed with this source code.
  */
 
+namespace Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection\Compiler;
+
 use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddConstraintValidatorsPass;