Forcing lower case controller names

[eluser]liquid_t[/eluser]
I just stumbled upon a problem with my site were people are linking to pages with the controller name in caps and getting 404 pages..not good

For instance www.domain.com/contact is fine. www.domain.com/CONTACT is not. also I think this only happens with controller names. Not controller functions or their parameters.

So the question is: Can I force lowercase with routing or htaccess ... or something?

Thanks a lot!