diff --git a/app/controllers/checkout_controller.rb b/app/controllers/checkout_controller.rb
index cffa0877b7..6b0f08ba99 100644
--- a/app/controllers/checkout_controller.rb
+++ b/app/controllers/checkout_controller.rb
@@ -175,7 +175,7 @@ class CheckoutController < ::BaseController
         return action_failed unless @order.process_payments!
       end
 
-      next if OrderWorkflow.new(@order).next({ shipping_method_id: shipping_method_id })
+      next if OrderWorkflow.new(@order).next({ "shipping_method_id" => shipping_method_id })
 
       return action_failed
     end
diff --git a/app/services/order_workflow.rb b/app/services/order_workflow.rb
index b27a828370..46596b67ce 100644
--- a/app/services/order_workflow.rb
+++ b/app/services/order_workflow.rb
@@ -37,7 +37,7 @@ class OrderWorkflow
 
   def advance_order_options
     shipping_method_id = order.shipping_method.id if order.shipping_method.present?
-    { shipping_method_id: shipping_method_id }
+    { "shipping_method_id" => shipping_method_id }
   end
 
   def advance_to_state(target_state, options = {})
@@ -67,7 +67,7 @@ class OrderWorkflow
 
   def after_transition_hook(options)
     if order.state == "delivery"
-      order.select_shipping_method(options[:shipping_method_id])
+      order.select_shipping_method(options["shipping_method_id"])
     end
 
     persist_all_payments if order.state == "payment"