The live shows of the X Factor kick off tonight but there may be one judge missing.
Simon Cowell is believed to have fallen down the stairs early on Friday morning.
The Sun newspaper says the X Factor judge was taken out of his home in London on a stretcher after fainting and falling down some stairs.
Cowell told The Sun, "I'm feeling okay. I fainted. I will be back but I don't know about tomorrow."
It's believed his partner Lauren Silverman has flown back from New York to be by Cowell's side.