Bruce Willis upset about restriction in new "DIE HARD" movie

Bruce Willis is furious his "yippe-ki-yay, motherf**ker" catchphrase has been cut from his new "Die Hard" movie.

The 52-year-old actor - who reprises his role as maverick cop John McClane in the fourth installment of the action franchise - is unhappy with the studio's decision to give "Live Free Or Die Hard' a PG-13 rating because it restricted his swearing.

He said: "It does make it a little more difficult. They don't want to see a lot of blood squirting out of bad guys. You can still do a lot of horrific things - you just can't say the word 'f**k' more than twice. Saying f**k every other sentence is part of the vernacular of 'Die Hard.'"

Despite the language restrictions, Willis claims the film - in which he tackles an internet-based terrorist organization - is just as good as the original 1988 movie.

He told Vanity Fair magazine: "But we still have a pretty hard-core smash-mouth film. I really wanted this one to live up to the first one, which I always thought was the only really good one."