[Rails3] "Visitor" is a reserved word?

I cannot do the following on my freshly created and immaculate app:

$ rails g model Visitor

The name ‘Visitor’ is either already used in your application or
reserved by Ruby on Rails. Please choose an alternative and run this
generator again.

I checked the rails wiki, but Visitor doesn’t appear as a reserved word.
What am I doing wrong?

My bad I just realized that my app is called visitor and Rails3 uses
this name in various places.

I don’t like this new convention, if I want to change the name of my app
I need to fix it in a few places.

Rails way to avoid ambiguity.