When routing creates a singular resource, it doesn't add itself to name_prefix

Routing code:

resource :subscription do
  get :renew
  resources :cards
end

Generates these routes (irrelevant parts skipped):

              GET    /subscription/renew(.:format)          {:action=>"renew", :controller=>"subscriptions"}
              GET    /subscription/cards(.:format)          {:action=>"index", :controller=>"cards"}
        cards POST   /subscription/cards(.:format)          {:action=>"create", :controller=>"cards"}
     new_card GET    /subscription/cards/new(.:format)      {:action=>"new", :controller=>"cards"}
    edit_card GET    /subscription/cards/:id/edit(.:format) {:action=>"edit", :controller=>"cards"}

As you can see, there's no method for renew and cards methods aren't name prefixed.