[3.2] route issue w root url displayed

my app has scoped routes :

MyApp::Application.routes.draw do

scope “/:locale” do

end

root :to => “cms_content#render_html”, :defaults => { :locale => I18n.locale }

end

I also have an helper to preset the locale for all my routes :

def default_url_options(options={})

{ :locale => I18n.locale }

end

so all urls are generated like : http://www.mydomain.com/en/users

but for the root url

it generates : http://www.mydomain.com/?locale=en

which is correctly handled by my app , but not so nice displayed …

I’d prefer to see the root url being : http://www.mydomain.com/en/

is there anyway to get it ?