Brazilian striker Brandao has been handed a one-month jail sentence along with a 20,000 euro (£15,800) fine for head-butting Paris Saint-Germain midfielder Thiago Motta.
The sentence exceeded the prosecutor's request for an eight-month suspended sentence along with a 15,000 euro (£11,800) fine.
After Bastia's 2-0 loss to PSG in August, the Bastia striker waited in the dressing room corridor for 20 minutes after being substituted. As the players came off he walked over to Motta and butted him in the face before running away.
Motta's nose was broken in the incident, and PSG president Nasser Al-Khelaifi called for Brandao to be banned for life.
Brandao's lawyer Olivier Martin claimed the player will not be jailed, with his sentence likely to be served through community service.