diff --git a/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php b/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
index 60ad1b89c4..c66732a37c 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Debug/TraceableEventDispatcherTest.php
@@ -25,7 +25,7 @@ class TraceableEventDispatcherTest extends TestCase
     public function testStopwatchSections()
     {
         $dispatcher = new TraceableEventDispatcher(new EventDispatcher(), $stopwatch = new Stopwatch());
-        $kernel = $this->getHttpKernel($dispatcher, function () { return new Response(); });
+        $kernel = $this->getHttpKernel($dispatcher, function () { return new Response('', 200, ['X-Debug-Token' => '292e1e']); });
         $request = Request::create('/');
         $response = $kernel->handle($request);
         $kernel->terminate($request, $response);