diff --git a/registrasion/tests/test_discount.py b/registrasion/tests/test_discount.py
index fb35330e156642fadb0d94cb764195642f2f5b38..e91053789fccf8e20b5a493e3a8f965a65a34307 100644
--- a/registrasion/tests/test_discount.py
+++ b/registrasion/tests/test_discount.py
@@ -4,7 +4,8 @@ from decimal import Decimal
 
 from registrasion import models as rego
 from registrasion.controllers import discount
-from cart_controller_helper import TestingCartController
+from controller_helpers import TestingCartController
+from controller_helpers import TestingInvoiceController
 
 from test_cart import RegistrationCartTestCase