diff --git a/spec/mailers/order_mailer_spec.rb b/spec/mailers/order_mailer_spec.rb
index 516c7f1d12..f94b573c90 100644
--- a/spec/mailers/order_mailer_spec.rb
+++ b/spec/mailers/order_mailer_spec.rb
@@ -23,14 +23,14 @@ describe Spree::OrderMailer do
     it "confirm_email_for_customer accepts an order id as an alternative to an Order object" do
       expect(Spree::Order).to receive(:find).with(order.id).and_return(order)
       expect {
-        confirmation_email = Spree::OrderMailer.confirm_email_for_customer(order.id)
+        Spree::OrderMailer.confirm_email_for_customer(order.id).deliver
       }.to_not raise_error
     end
 
     it "cancel_email accepts an order id as an alternative to an Order object" do
       expect(Spree::Order).to receive(:find).with(order.id).and_return(order)
       expect {
-        cancel_email = Spree::OrderMailer.cancel_email(order.id)
+        Spree::OrderMailer.cancel_email(order.id).deliver
       }.to_not raise_error
     end
   end
diff --git a/spec/mailers/shipment_mailer_spec.rb b/spec/mailers/shipment_mailer_spec.rb
index e952536130..c1d8f046b4 100644
--- a/spec/mailers/shipment_mailer_spec.rb
+++ b/spec/mailers/shipment_mailer_spec.rb
@@ -30,7 +30,7 @@ describe Spree::ShipmentMailer do
   it "shipment_email accepts an shipment id as an alternative to an Shipment object" do
     expect(Spree::Shipment).to receive(:find).with(shipment.id).and_return(shipment)
     expect {
-      shipped_email = Spree::ShipmentMailer.shipped_email(shipment.id)
+      Spree::ShipmentMailer.shipped_email(shipment.id).deliver
     }.to_not raise_error
   end
 end