diff --git a/src/Webservice/Renderer.php b/src/Webservice/Renderer.php
index ea4f3cc..17e0715 100644
--- a/src/Webservice/Renderer.php
+++ b/src/Webservice/Renderer.php
@@ -24,7 +24,8 @@ class Renderer
     public function render($status, $data)
     {
         header(sprintf('HTTP/1.0 %s %s', $status, self::$statusMessages[$status]));
-		header("Access-Control-Allow-Origin: *");
+        header("Access-Control-Allow-Origin: *");
+        header("Content-Type: application/json; charset=utf-8");
 
         ob_clean();
         flush();