diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
index ad05400d5ce7379ff4f7b717445a6c8e7dfea043..6b84d404554f31f413f3489dcb6fec51a5c503be 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
@@ -36,10 +36,7 @@ public function testSerialization() {
     $dependencySerialization->setContainer($container);
 
     $string = serialize($dependencySerialization);
-    $object = unserialize($string);
-
-    $string = serialize($dependencySerialization);
-    /** @var \Drupal\Tests\Core\DependencyInjection\DependencySerializationTestDummy $object */
+    /** @var \Drupal\Tests\Core\DependencyInjection\DependencySerializationTestDummy $dependencySerialization */
     $dependencySerialization = unserialize($string);
 
     $this->assertSame($service, $dependencySerialization->service);