diff --git a/core/modules/rest/lib/Drupal/rest/Tests/RESTTestBase.php b/core/modules/rest/lib/Drupal/rest/Tests/RESTTestBase.php
index acf4802..09e1e09 100644
--- a/core/modules/rest/lib/Drupal/rest/Tests/RESTTestBase.php
+++ b/core/modules/rest/lib/Drupal/rest/Tests/RESTTestBase.php
@@ -116,6 +116,8 @@ protected function entityCreate($entity_type) {
         return entity_create('node', array('title' => $this->randomString()));
       case 'user':
         return entity_create('user', array('name' => $this->randomName()));
+      case 'view_mode':
+        return entity_create('view_mode', array('name' => $this->randomName(), 'machineName' => 'node.test'));
       default:
         return entity_create($entity_type, array());
     }