Mongoid and assets problem on Ruby on Rails 3.2

I was doing my first Ruby on Rails application with MongoDB (via Mongoid gem). When I deployed the application to a production server, assets were compiled correctly but all javascript and css links were still pointing to stylesheets and javascripts folders, like

<link href=”/stylesheets/application.css” media=”screen” rel=”stylesheet” type=”text/css” />

I checked capistrano and server configurations, but nothing were wrong there. Finally I figured out what was causing the problem. I have not required “sprockets/railtie” in the config/application.rb

In the Mongoid documentation especially in ‘Configuration’ section is ‘Getting Rid of Active Record’ subsection which says:

Open myapp/config/application.rb and near the top, remove the line require "rails/all" and add the following lines so you end up with this:

require "action_controller/railtie"
require "action_mailer/railtie"
require "active_resource/railtie"
require "rails/test_unit/railtie"
# require "sprockets/railtie" # Uncomment this line for Rails 3.1+

In a rush I only saw number 3.1 and thought it is okay to leave it as uncommented. Current Rails version is 3.2.8 so should that line be uncommented as default on Mongoid documentation?