Jake Gyllenhaal got punched in the face by Conor McGregor on the set of Road House.

The 43-year-old actor — who plays Elwood Dalton, an MMA fighter-turned bouncer in Doug Liman's movie remake — was impressed by the charisma of the real-life UFC champion during filming, but things almost went wrong when they were rehearsing a fight scene off camera.

Praising Conor, who plays antagonist Knox, he said on SiriusXM's The Howard Stern Show: "I think he's just so charismatic."