Singer Justin Bieber has been advised by the executives on his upcoming documentary movie "Believe" to be on his best behaviour.
"Director Jon M. Chu and his manager Scooter Braun had a sit-down with Bieber and laid down the ground rules," contactmusic.com quoted a source close to the singer as saying.
The singer has been given a long list of do's and don'ts by the makers.
"...no speeding, no spitting, no screaming threats at paparazzi, fans or neighbours, no puffing on funny cigarettes - and absolutely no problems with police," the source added.
The 19-year-old has sparked controversy for partying in over 21 nightclubs in recent months.