How to change the redirection page after user activation account?

[JULIANR]

Hi guys. I have a little issue with the redirection page after the user activation account with the link emailed. Actually the user is redirected to a page with route "index.php/user-registration?layout=complete" when in the top of the page appear the confirmation message of account activated successfuly and in the bottom again the new user form registration....
How can I redirect to a single message confirmation page without the registration form?

Thank You

PD: I have VM 2.6.10 and Joomla! 2.5.26