Bugg with country from their IP

Hi,every body !!
I installed piwik in my web site insted of Phpmyvisites.
Everything is OK, but when i check the visitor country, i see that Tunisian visitors are shown as French one.

How can i fix that.

Thanks.

There’s a bug in extracting the country code from the browser language. There’s a fix in ticket #504 not yet commited to SVN.