diff --git a/app/controllers/ps_admin/order_controller.rb b/app/controllers/ps_admin/order_controller.rb
index 2da0114..6d860e2 100644
--- a/app/controllers/ps_admin/order_controller.rb
+++ b/app/controllers/ps_admin/order_controller.rb
@@ -26,9 +26,9 @@ module PsAdmin
     end
 
     def gen_pdf_file
-      otp = OrderToPdf.new(@order).call
+      otp = OrderToPdf.new(@order)
 
-      send_data otp, filename: otp.file_name
+      send_data otp.call, filename: otp.file_name
     end
 
     def status_histories