diff --git a/core/lib/Drupal/Core/Menu/MenuLinkManager.php b/core/lib/Drupal/Core/Menu/MenuLinkManager.php
index 15b2e4d..942c458 100644
--- a/core/lib/Drupal/Core/Menu/MenuLinkManager.php
+++ b/core/lib/Drupal/Core/Menu/MenuLinkManager.php
@@ -300,7 +300,7 @@ public function removeDefinition($id, $persist = TRUE) {
    * {@inheritdoc}
    */
   public function menuNameInUse($menu_name) {
-    $this->treeStorage->menuNameInUse($menu_name);
+    return $this->treeStorage->menuNameInUse($menu_name);
   }
 
   /**