diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
index b435d07..8fcab73 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
@@ -88,13 +88,6 @@ class TestClass implements ContainerAwareInterface {
   public $container;
 
   /**
-   * {@inheritdoc}
-   *
-   * Make the property accessible for the test.
-   */
-  public $_serviceIds;
-
-  /**
    * Constructs a new TestClass object.
    *
    * @param \stdClass $service