A BBC spokesperson told Digital Spy: "Sir Bruce Forsyth has the flu and therefore isn't feeling well enough to present Strictly Come Dancing on BBC One"
Tess Daly will be joined by Claudia Winkleman on tonight's show, which airs at 6:20 on BBC One.
Forsyth has been the subject of much criticism over his presenting style throughout his career, but has said he has no plans to step down from Strictly.
Do you think Bruce should retire? Let us know below.
BRUCE FORSYTH SLAMS D-LIST CELEBRITIES WHO RUINED STRICTLY COME DANCING
BRUCE FORSYTH REIGNITES X FACTOR FEUD
LOUIS WALSH: "FORSYTH'S TIME IS FINISHED"