diff --git a/core/lib/Drupal/Core/Routing/RoutePreloader.php b/core/lib/Drupal/Core/Routing/RoutePreloader.php
index f95429c..6f37ec3 100644
--- a/core/lib/Drupal/Core/Routing/RoutePreloader.php
+++ b/core/lib/Drupal/Core/Routing/RoutePreloader.php
@@ -100,7 +100,7 @@ public function onAlterRoutes(RouteBuildEvent $event) {
     $collection = $event->getRouteCollection();
     foreach ($collection->all() as $name => $route) {
       if (strpos($route->getPath(), '/admin') === FALSE &&
-        ($route->hasOption('_content') || $route->hasOption('_form') || $route->hasOption('_entity_form') | $route->hasOption('_entity_view') || $route->hasOption('_preload'))
+        ($route->hasDefault('_content') || $route->hasDefault('_form') || $route->hasDefault('_entity_form') | $route->hasDefault('_entity_view') || $route->hasOption('_preload'))
       ) {
         $this->nonAdminRoutesOnRebuild[] = $name;
       }