Nokogiri and Webrat

Today I made some more steps using RSpec. My new steps involved Webrat, a handy library for acceptance tests, which depends on Nokogiri. The installation guide of webrat only mentioned to require webrat in your helper. But I got the following error

NameError: uninitialized constant Nokogiri::CSS::XML

After a I while figured out, that you first have to require nokogiri explicitly. So my steps for webrat are now beginning with:

require 'nokogiri'
require "webrat/rails"

steps_for :webrat do
  
  When "visits '$link'" do |link|
    visits link
  end
  ...

To check your gem versions against mine, here an extract of my gem list:

Rails (2.2.2)
webrat (0.3.2)
nokogiri (1.1.0)
libxml-ruby (0.9.7)
libxslt-ruby (0.9.1)