when using scaffolding it should be CommentsController, not CommentController

I am a novice into Rails world, so i was going through http://guides.rubyonrails.org/getting_started.html and when i did 'rails generate controller Comment', in the controllers/ folder it created file comment_controller.rb with a class called CommentController. However the application threw me 'Routing error' everytime i tried to comment. I've found out it should be comments_controller.rb with CommentsController class. Can you check this out?

My Rails version is 3.0.5.

--edit-- I've found that i had to write 'generate controller Comments' from the beginning - it is said in the guide. I think the ticket is invalid. Sorry for inconvenience.