Rendering Action

I've aliased a route in my routes.rb file.

get 'sign_in' => 'sessions#new', :as => 'sign_in'

I've noticed that when I render the action for the aliased route, the
original name (sessions/new) NOT the alias (sign_in) is used. Does
anyone know how to force the use of the aliased route?

Thanks.

-Ari