diff --git a/core/modules/system/src/Tests/RouteProcessor/RouteProcessorCurrentIntegrationTest.php b/core/modules/system/src/Tests/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
index f7691bf..d21d834 100644
--- a/core/modules/system/src/Tests/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
+++ b/core/modules/system/src/Tests/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
@@ -47,7 +47,7 @@ public function testProcessOutbound() {
       'SCRIPT_FILENAME' => \Drupal::root() . '/index.php',
       'SERVER_NAME' => 'http://www.example.com',
     ];
-    $request = Request::create('/subdir', 'GET', [], [], [], $server);
+    $request = Request::create('/subdir/', 'GET', [], [], [], $server);
     $request->attributes->set(RouteObjectInterface::ROUTE_NAME, '<front>');
     $request->attributes->set(RouteObjectInterface::ROUTE_OBJECT, new Route('/'));
 
diff --git a/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php b/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
index b6253f0..6f5401f 100644
--- a/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
@@ -159,7 +159,7 @@ protected function setupRequestStack($subdir) {
         'SCRIPT_FILENAME' => $this->root . '/index.php',
         'SERVER_NAME' => 'http://www.example.com',
       ];
-      $request = Request::create('/subdir');
+      $request = Request::create('/subdir/');
     }
     else {
       $request = Request::create('/');