diff --git a/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php b/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
index 3291c77356..26ef1b2736 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/RegexTest.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Constraints;
+namespace Symfony\Component\Validator\Tests\Constraints;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Validator\Constraints\Regex;