03/10/2009 at 12:00 AM EDT
got the surprise of his life when he found out he got the final spot in American Idol
's first-ever Top 13
. But viewers voting for the final contestant to perform on Tuesday's show might be in for a surprise of their own.
Because the phone numbers viewers call to vote for their favorite contestant of the night only ever went to 12, it seems that a number for a 13th contestant wasn't ever considered. Until this season.
Currently, if you follow the pattern of the numbers for the first 12 contestants' voting lines, you'll get a busy signal because, as Ryan Seacrest
says every performance episode, phone lines open at the end of the show. But dialing what would be the 13th line doesn't get you a busy signal at all -- it's a working sex line.
A rep for FOX says they are aware of the issue but had no further comment.
But it sounds like producers are working fast to fix a potential problem. Seacrest, talking about voting for the 13th contestant on his KIIS-FM radio show said, "Viewers, tonight, pay attention!"