The former Saved By The Bell actor and Celebrity Big Brother housemate was jailed by a judge in Wisconsin following a stabbing incident last Christmas.
Dustin, 38, had been convicted of carrying a concealed weapon and disorderly conduct following the bar brawl on Christmas Day.
According to BBC News, he will report to jail on Sunday, 28 June to begin his sentence.
Dustin had claimed he was defending his fiancée when a man was stabbed during the incident and had not intended to do any harm.
The victim was not seriously injured.
Dustin found fame as a child star on 1990s sitcom Saved By The Bell, playing the nerdy but loveable Screech.
He appeared on CBB in 2013.
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