Conviction expunged
The ruling in Los Angeles came after his lawyer had requested the dismissal.
The actor-director successfully completed the terms of his three-year probation following the misdemeanour drunken driving arrest in which he made derogatory comments about Jews and women.
As part of his no-contest plea, Gibson was sentenced to three years of probation, paid about $1,600 in fines and had to attend Alcoholics Anonymous and other meetings.
Gibson has repeatedly apologised for making the derogatory comments about Jews to the sheriff’s deputy who arrested him in 2006 in Malibu, California.