diff --git a/.travis.yml b/.travis.yml
index 5beabdd4d..da3f50c5a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ php:
   - 5.3
   - 5.4
   - 5.5
+  - 5.6
+  - hhvm
 
 env:
     - SYMFONY_VERSION=2.1.*
diff --git a/Tests/EventListener/RequestListenerTest.php b/Tests/EventListener/RequestListenerTest.php
index e51d3807f..82c674f32 100644
--- a/Tests/EventListener/RequestListenerTest.php
+++ b/Tests/EventListener/RequestListenerTest.php
@@ -19,8 +19,10 @@ public function testDocQueryArg()
     {
         $client = $this->createClient();
 
-        $crawler = $client->request('GET', '/tests?_doc=1');
-        $this->assertEquals('/tests.{_format}', trim($crawler->filter(".operation .path:contains('/tests')")->text()), 'Event listener should capture ?_doc=1 requests');
+        $client->request('GET', '/tests?_doc=1');
+        $content = $client->getResponse()->getContent();
+        $this->assertTrue(0 !== strpos($content, '<h1>API documentation</h1>'), 'Event listener should capture ?_doc=1 requests');
+        $this->assertTrue(0 !== strpos($content, '/tests.{_format}'), 'Event listener should capture ?_doc=1 requests');
 
         $client->request('GET', '/tests');
         $this->assertEquals('tests', $client->getResponse()->getContent(), 'Event listener should let normal requests through');