diff --git a/core/modules/system/lib/Drupal/system/Tests/Routing/RouterTest.php b/core/modules/system/lib/Drupal/system/Tests/Routing/RouterTest.php
index b32c724..fbbb607 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Routing/RouterTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Routing/RouterTest.php
@@ -147,12 +147,17 @@ public function testControllerResolutionPage() {
    * Checks the generate method on the url generator using the front router.
    */
   public function testUrlGeneratorFront() {
+    // Setup the request context of the url generator. Note: Just calling the
+    // code without a proper request, does not setup the request context
+    // automatically.
     $context = new RequestContext();
     $context->fromRequest($this->container->get('request'));
     $this->container->get('url_generator')->setContext($context);
 
-    $this->assertEqual($this->container->get('url_generator')->generate('front'), $context->getBaseUrl() . '/');
-    $this->assertEqual($this->container->get('url_generator')->generateFromPath('<front>'), $context->getBaseUrl() . '/');
+    global $base_path;
+
+    $this->assertEqual($this->container->get('url_generator')->generate('front'), $base_path);
+    $this->assertEqual($this->container->get('url_generator')->generateFromPath('<front>'), $base_path);
   }
 
   /**