mail verification mail has wrong link #710

The mail sent on registration here from dev.piwik.org s trac system has a wrong URL.
It says Verification URL: <http://dev.piwik.org/verify_email?token=xxxxxxxx>
and links to http://dev.piwik.org/verify_email?token=xxxxxxxx

however, it should link to
http://dev.piwik.org/trac/verify_email?token=xxxxxxxx
Keywords: trac,verify,mail

This is also the case for Ticket-Info/Changes Mails. (missing trac dir)
It seems to be a wrong settings value somewhere?

in trac/piwik/conf/trac.ini look for base_url