diff --git a/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php b/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
index 52d288306e2..9bc219d8fc1 100644
--- a/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
+++ b/core/lib/Drupal/Core/KeyValueStore/KeyValueFactory.php
@@ -40,10 +40,19 @@ class KeyValueFactory implements KeyValueFactoryInterface {
   protected $stores = [];
 
   /**
+   * The service container.
+   *
    * @var \Symfony\Component\DependencyInjection\ContainerInterface
    */
   protected $container;
 
+  /**
+   * Collection-specific storage override options.
+   *
+   * @var array
+   */
+  protected $options;
+
   /**
    * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
    *   The service container.