diff --git a/routing.rst b/routing.rst
index baba8267706..aa59369865e 100644
--- a/routing.rst
+++ b/routing.rst
@@ -302,7 +302,7 @@ arbitrary matching logic:
         use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
 
         return function (RoutingConfigurator $routes) {
-            $routes->add('contact', '')
+            $routes->add('contact', '/contact')
                 ->controller([DefaultController::class, 'contact'])
                 ->condition('context.getMethod() in ["GET", "HEAD"] and request.headers.get("User-Agent") matches "/firefox/i"')
                 // expressions can also include config parameters: