diff --git a/core/lib/Drupal/Core/Config/Context/GlobalContext.php b/core/lib/Drupal/Core/Config/Context/GlobalContext.php
index d7b1915..a555231 100644
--- a/core/lib/Drupal/Core/Config/Context/GlobalContext.php
+++ b/core/lib/Drupal/Core/Config/Context/GlobalContext.php
@@ -24,8 +24,8 @@ class GlobalContext extends ConfigContext {
    */
   public function __construct(StorageInterface $storage, EventDispatcher $event_dispatcher) {
     global $conf;
-    // Set config overrides by reference so they can be added later.
-    $this->data[self::OVERRIDE] = &$conf;
+
+    $this->data[self::OVERRIDE] = $conf;
     parent::__construct($storage, $event_dispatcher);
   }