diff --git a/src/Symfony/Component/Cache/Tests/DataCollector/CacheDataCollectorTest.php b/src/Symfony/Component/Cache/Tests/DataCollector/CacheDataCollectorTest.php
index f704bbfe0e..6aa94c2c63 100644
--- a/src/Symfony/Component/Cache/Tests/DataCollector/CacheDataCollectorTest.php
+++ b/src/Symfony/Component/Cache/Tests/DataCollector/CacheDataCollectorTest.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Cache\Tests\Marshaller;
+namespace Symfony\Component\Cache\Tests\DataCollector;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Cache\Adapter\TraceableAdapter;