Zmitser Dashkevich did not attend the trial in Minsk on January 30.
His parole officer testified that Dashkevich violated his parole by missing one mandatory visit to a police station.
Dashkevich told RFE/RL that Belarus's parole policies are anachronistic and make "no sense."
Dashkevich was released from jail in August after serving more than 2 1/2 years for allegedly assaulting two people in December 2010.
Dashkevich denies the charge, calling it politically motivated.
Under the terms of his release, he was ordered to stay at home between 9:00 p.m. and 6:00 a.m. for six months and to regularly visit his parole officer.
Amnesty International designated Dashkevich a "prisoner of conscience," jailed for political views.