diff --git a/core/modules/views/lib/Drupal/views/Tests/Plugin/RowEntityTest.php b/core/modules/views/lib/Drupal/views/Tests/Plugin/RowEntityTest.php
index 9136b2c..9bf50c4 100644
--- a/core/modules/views/lib/Drupal/views/Tests/Plugin/RowEntityTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/Plugin/RowEntityTest.php
@@ -63,6 +63,7 @@ public function testEntityRow() {
 
     $view = views_get_view('test_entity_row');
     $this->content = $view->preview();
+    $this->content = drupal_render($this->content);
 
     $this->assertText($term->label(), 'The rendered entity appears as row in the view.');
   }