diff --git a/app/library/App/Controllers/GaController.php b/app/library/App/Controllers/GaController.php
index 3032e9f..107e14d 100644
--- a/app/library/App/Controllers/GaController.php
+++ b/app/library/App/Controllers/GaController.php
@@ -25,7 +25,7 @@ class GaController extends CrudResourceController {
 
     public function getAction() {
 
-        $metric = $this->request->getServer('metric');
+        $metric = $this->request->get('metric');
 
         putenv('GOOGLE_APPLICATION_CREDENTIALS=/var/www/phalcon/'.self::SECRET_JSON);
         $client = new Google_Client();
--
libgit2 0.21.4