diff --git a/core/lib/Drupal/Core/Routing/AccessAwareRouter.php b/core/lib/Drupal/Core/Routing/AccessAwareRouter.php
index c332fab..5c3d931 100644
--- a/core/lib/Drupal/Core/Routing/AccessAwareRouter.php
+++ b/core/lib/Drupal/Core/Routing/AccessAwareRouter.php
@@ -128,7 +128,7 @@ public function getRouteCollection() {
    * {@inheritdoc}
    */
   public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH) {
-    if ($this->router instanceof RouterInterface) {
+    if ($this->router instanceof UrlGeneratorInterface) {
       return $this->router->generate($name, $parameters, $referenceType);
     }
   }