diff --git a/Controller/ApiDocController.php b/Controller/ApiDocController.php
index 1ac882f..8ea71aa 100644
--- a/Controller/ApiDocController.php
+++ b/Controller/ApiDocController.php
@@ -21,6 +21,6 @@ class ApiDocController extends Controller
         $extractedDoc = $this->get('nelmio_api_doc.extractor.api_doc_extractor')->all();
         $htmlContent  = $this->get('nelmio_api_doc.formatter.html_formatter')->format($extractedDoc);
 
-        return new Response($htmlContent);
+        return new Response($htmlContent, 200, array('Content-Type' => 'text/html'));
     }
 }