Two entries for one IMDB entry?

Why does this hack Paris Hilton get two credits for Simple Life, when they both link to same show on IMDB?

www.listal.com/tv/the-simple-life

www.listal.com/tv/the-simple-life-18071

I'm guessing that two items on IMDB were merged together, namely The Simple Life, and The Simple Life 2, and they still appear as two items here.

Yes they are actually 2 different imdb numbers I guess imdb merged them at some point, I will fix it soon.