diff --git a/core/lib/Drupal/Core/EventSubscriber/ViewSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ViewSubscriber.php
index 637d48d..752ef48 100644
--- a/core/lib/Drupal/Core/EventSubscriber/ViewSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ViewSubscriber.php
@@ -60,7 +60,7 @@ class ViewSubscriber implements EventSubscriberInterface {
     $page_callback_result = $event->getControllerResult();
 
     $response = new JsonResponse();
-    $response->setContent($page_callback_result);
+    $response->setData($page_callback_result);
 
     return $response;
   }