Display Coupon code/name in "Order Total"

when viewing an order, the order total section displays the coupon using the coupon type and not the coupon name.

I think it would be better to display the actual coupon code.
it is displayed as "Fixed Coupon: XXXX" when you edit the order.

I don't the fact that it's a fixed or percentage would matter to the user, but the code would.

thanks

Idan