diff --git a/config.ru b/config.ru
index ac09b8f8a..3ab73beb9 100644
--- a/config.ru
+++ b/config.ru
@@ -1,4 +1,4 @@
 # This file is used by Rack-based servers to start the application.
 
-require ::File.expand_path('../config/environment',  __FILE__)
-run PuppetDashboard::Application
+require_relative 'config/environment'
+run Rails.application