git diff core/lib/Drupal/Core/Entity/EntityManager.php
diff --git a/core/lib/Drupal/Core/Entity/EntityManager.php b/core/lib/Drupal/Core/Entity/EntityManager.php
index 52e2f30..3357320 100644
--- a/core/lib/Drupal/Core/Entity/EntityManager.php
+++ b/core/lib/Drupal/Core/Entity/EntityManager.php
@@ -418,6 +418,7 @@ public function getAllBundleInfo() {
    */
   public function getEntityTypeLabels($group = FALSE) {
     $options = array();
+    $content_options = array();
     $definitions = $this->getDefinitions();
     // Sort labels in alphabetical order.
     ksort($definitions);