Judge Cheryl is due to appear as usual on the ITV show this weekend, however she has been fighting off a nasty bug.
The former Girls Aloud star is, who is mentor to contestant Lauren Platt, is desperate to be well in time but has been laid low for the last few days.
Taking to Twitter, Cheryl revealed: "Sorry for my absence on here the past few days. I have been so sick. Trying to be better for Sat."
Alongside her message to fans, Cheryl also posted emoticons of a crying face, a sad face and praying hands.
Cheryl has been inundated with get well messages from worried followers, who are no doubt hoping she is fighting fit by tomorrow night.
This weekend the contestants will be taking on either a Whitney Houston or Elton John song, but it is unclear as to whether Cheryl has made it to any rehearsals with Lauren.
Earlier today, X Factor bosses confirmed that the hopefuls will face another double elimination, which no doubt adds extra pressure.
The first elimination will take place on Saturday night, following a guest performance from David Guetta, and the second act will be sent home as usual during Sunday's results show.
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