diff --git a/app/controllers/ps_admin/order_controller.rb b/app/controllers/ps_admin/order_controller.rb
index 87b50ef..aec2f78 100644
--- a/app/controllers/ps_admin/order_controller.rb
+++ b/app/controllers/ps_admin/order_controller.rb
@@ -44,7 +44,7 @@ module PsAdmin
 
     def set_orders
       @orders = Order.complete.page(params[:page]).per(ENV['order_per_page'])
-                     .order('created_at DESC')
+                     .order('order_number DESC')
     end
   end
 end