diff --git a/spec/factories/calculator_factory.rb b/spec/factories/calculator_factory.rb
index 0c8acaf3e5..1268a8ccb7 100644
--- a/spec/factories/calculator_factory.rb
+++ b/spec/factories/calculator_factory.rb
@@ -1,4 +1,12 @@
 FactoryBot.define do
+  factory :calculator, class: Spree::Calculator::FlatRate do
+    after(:create) { |c| c.set_preference(:amount, 10.0) }
+  end
+
+  factory :no_amount_calculator, class: Spree::Calculator::FlatRate do
+    after(:create) { |c| c.set_preference(:amount, 0) }
+  end
+
   sequence(:calculator_amount)
   factory :calculator_per_item, class: Calculator::PerItem do
     preferred_amount { generate(:calculator_amount) }