diff --git a/core/modules/system/src/Tests/Session/SessionHttpsTest.php b/core/modules/system/src/Tests/Session/SessionHttpsTest.php
index b547e44..8df5d25 100644
--- a/core/modules/system/src/Tests/Session/SessionHttpsTest.php
+++ b/core/modules/system/src/Tests/Session/SessionHttpsTest.php
@@ -356,7 +356,7 @@ protected function loginHttps(AccountInterface $account) {
    */
   protected function getPathFromLocationHeader($https = FALSE, $response_code = 303) {
     // Generate the base_url.
-    $base_url = $this->container->get('url_generator')->generateFromRoute('', [], ['absolute' => TRUE]);
+    $base_url = $this->container->get('url_generator')->generateFromRoute('<front>', [], ['absolute' => TRUE]);
     if ($https) {
       $base_url = str_replace('http://', 'https://', $base_url);
     }