Action movie icon Sylvester Stallone broke his neck while filming a fight scene in his latest film, it was revealed Wednesday.

Stallone was hurt shooting a scene with former wrestler Stone Cold Steve Austin for action movie The Expendables which is set for release this summer.

Shooting for the film began in March 2009, but news of Stallone’s injury was only just released.

“My fight was so vicious I got a hairline fracture in my neck. I had to have a very serious operation,” Stallone said.

The Expendables also stars Arnold Schwarzenegger, Bruce Willis, Jet Li and Mickey Rourke.