diff --git a/core/lib/Drupal/Core/EventSubscriber/HtmlViewSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/HtmlViewSubscriber.php
index 8383d8e..ed2e87b 100644
--- a/core/lib/Drupal/Core/EventSubscriber/HtmlViewSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/HtmlViewSubscriber.php
@@ -69,9 +69,7 @@ public function onPartialHtmlResponse(GetResponseForControllerResultEvent $event
     // @todo these are horrible passthrough hacks; remove them incrementally as we implement the respective pieces elsewhere.
     $vars = array(
       'page' => array(
-        '#type' => 'markup',
-        '#markup' => $response->getContent(),
-        '#children' => $response->getContent(), // @todo some preprocessors demand this be here
+        '#children' => $response->getContent(),
         'page_top' => empty($page['page_top']) ? array(): $page['page_top'],
         'page_bottom' => empty($page['page_bottom']) ? array(): $page['page_bottom'],
       ),