diff --git a/BillingBundle/DependencyInjection/BillingExtension.php b/BillingBundle/DependencyInjection/BillingExtension.php
index 1e6c576..b9c7a32 100644
--- a/BillingBundle/DependencyInjection/BillingExtension.php
+++ b/BillingBundle/DependencyInjection/BillingExtension.php
@@ -4,6 +4,7 @@ namespace Bluesquare\BillingBundle\DependencyInjection;
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\Routing\Loader\YamlFileLoader;
 
 class BillingExtension extends Extension
 {