Will Smith called the original Karate Kid to give his young son Jaden guidance on how to play the role in the forthcoming remake.

The Men In Black star is producing the movie and his 10-year-old son has landed the lead part of Daniel LaRusso.

And Smith is so eager for the youngster to shine in the movie, he called up Ralph Macchio, who played the role in the first three Karate Kid films in the 1980s, to impart some advice to Jaden.

Macchio tells E! News, "It was very cool. He called and said, 'Would you mind getting on the phone with my son?' I felt like Yoda to young Skywalker.

"(Jaden was) adorable and completely respectful and excited. I just told him to have fun. That was my advice."

(This news article provided by World Entertainment News Network)