diff --git a/core/lib/Drupal/Core/Entity/EntityBundleAccessCheck.php b/core/lib/Drupal/Core/Entity/EntityBundleAccessCheck.php
index 678a572503..9fda06c6a1 100644
--- a/core/lib/Drupal/Core/Entity/EntityBundleAccessCheck.php
+++ b/core/lib/Drupal/Core/Entity/EntityBundleAccessCheck.php
@@ -46,7 +46,7 @@ public function access(Route $route, RouteMatchInterface $route_match, AccountIn
         }
       }
     }
-    return AccessResult::forbidden();
+    return AccessResult::forbidden('The entity bundle does not match the route _entity_bundles requirement.');
   }
 
 }