I’m using <?php the_category(‘style=none’); ?> but it goes wrong when…

I’m using <?php the_category(‘style=none’); ?> but it goes wrong when I specify more than one category for a post. This happens…

Otherstyle=none Personalstyle=none Photographystyle=none Universitystyle=none Web Design

but it should just say other personal photography university and web design. It displays just one category fine.