diff --git a/app/helpers/affirm_helper.rb b/app/helpers/affirm_helper.rb
index 0c79ab2..cd92700 100644
--- a/app/helpers/affirm_helper.rb
+++ b/app/helpers/affirm_helper.rb
@@ -15,6 +15,9 @@ def affirm_payload_json(order, payment_method, metadata = {})
       confirmation_url: spree.confirm_affirm_url(payment_method_id: payment_method.id, order_id: order.id),
       cancel_url: spree.cancel_affirm_url(payment_method_id: payment_method.id, order_id: order.id)
     }
+
+    order.payments.where(source_type: 'SolidusAffirm::Checkout').pending.collect(&:cancel!)
+
     payload = SolidusAffirm::CheckoutPayload.new(order, config, metadata)
     SolidusAffirm::Config.checkout_payload_serializer.new(payload, root: false).to_json
   end