Remove wp theme website url from footer

Hi, so I got this minimalist wordpress theme http://wordpress.org/extend/themes/minimalist and when I install it I see at the bottom of my site the theme creator's url.



I searched in the source code of the plugin and I can't find the url in any of the files, so I wonder if you guys can help me to remove it. The theme is here
Thank you!

This footprint looks more like a Plugin's one... What plugins are enabled ?

That was the problem, I don't know how I didn't realised. Thank you!