diff --git a/app/controllers/api/payzen_controller.rb b/app/controllers/api/payzen_controller.rb
index 524bff3a3..76d60980f 100644
--- a/app/controllers/api/payzen_controller.rb
+++ b/app/controllers/api/payzen_controller.rb
@@ -7,6 +7,7 @@ class API::PayzenController < API::PaymentsController
   require 'pay_zen/token'
   require 'pay_zen/transaction'
   require 'pay_zen/helper'
+  require 'pay_zen/service'
 
   def sdk_test
     str = 'fab-manager'