diff --git a/app/controllers/split_checkout_controller.rb b/app/controllers/split_checkout_controller.rb
index 8707c74727..7f5ff145dc 100644
--- a/app/controllers/split_checkout_controller.rb
+++ b/app/controllers/split_checkout_controller.rb
@@ -63,7 +63,7 @@ class SplitCheckoutController < ::BaseController
   end
 
   def selected_payment_method
-    @order.payments.order(:created_at).last&.payment_method
+    @selected_payment_method ||= @order.payments.order(:created_at).last&.payment_method
   end
 
   def update_order