diff --git a/spec/factories.rb b/spec/factories.rb
index 1da7e5d478..4454be4fe7 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -374,6 +374,7 @@ FactoryBot.define do
         shipping_method { create :shipping_method }
       end
       after(:create) do |shipment, evaluator|
+        shipment.shipping_rates.destroy_all # remove existing shipping_rates from shipment
         shipment.add_shipping_method(evaluator.shipping_method, true)
       end
     end
diff --git a/spec/models/spree/adjustment_spec.rb b/spec/models/spree/adjustment_spec.rb
index 114c7e7cd3..c4d8f3f786 100644
--- a/spec/models/spree/adjustment_spec.rb
+++ b/spec/models/spree/adjustment_spec.rb
@@ -61,11 +61,13 @@ module Spree
       describe "Shipment adjustments" do
         let(:shipping_method) { create(:shipping_method_with, :flat_rate) }
         let(:shipment)        { create(:shipment_with, :shipping_method, shipping_method: shipping_method) }
-        let!(:order)          { create(:order, distributor: hub, shipments: [shipment]) }
+        let!(:order)          { create(:order, distributor: hub) }
         let(:hub)             { create(:distributor_enterprise, charges_sales_tax: true) }
         let!(:line_item)      { create(:line_item, order: order) }
         let(:adjustment)      { order.adjustments(:reload).shipping.first }
 
+        before { order.shipments = [shipment] }
+
         it "has a shipping charge of $50" do
           adjustment.amount.should == 50
         end