diff --git a/framework/core/src/Forum/ForumServiceProvider.php b/framework/core/src/Forum/ForumServiceProvider.php
index 8e671dbfc..301cfa320 100644
--- a/framework/core/src/Forum/ForumServiceProvider.php
+++ b/framework/core/src/Forum/ForumServiceProvider.php
@@ -205,7 +205,7 @@ class ForumServiceProvider extends AbstractServiceProvider
         $defaultRoute = $this->container->make('flarum.settings')->get('default_route');
 
         if (isset($routes->getRouteData()[0]['GET'][$defaultRoute]['handler'])) {
-            $toDefaultController = $routes->getRoutes()['GET'][$defaultRoute]['handler'];
+            $toDefaultController = $routes->getRouteData()[0]['GET'][$defaultRoute]['handler'];
         } else {
             $toDefaultController = $factory->toForum(Content\Index::class);
         }