diff --git a/registrasion/tests/cart_controller_helper.py b/registrasion/tests/cart_controller_helper.py
index 0578229755a93ea39e49b76ed6e8f75fe1477dfd..9e4191f0018ad162da52fce2427a26dee8f810f0 100644
--- a/registrasion/tests/cart_controller_helper.py
+++ b/registrasion/tests/cart_controller_helper.py
@@ -24,3 +24,7 @@ class TestingCartController(CartController):
         except ObjectDoesNotExist:
             old_quantity = 0
         self.set_quantity(product, old_quantity + quantity)
+
+    def next_cart(self):
+        self.cart.active = False
+        self.cart.save()