Mike 'The Situation' Sorrentino has had an assault charge downgraded.

Addressing Mike, Frank and their sister Melissa, the judge said:

"From my understanding, this was an unfortunate family situation that has since been resolved."

The 32-year-old reality star pleaded guilty to the lesser offence and will pay a fine of less than $600, including court costs.

His lawyer Edward Franklin said: "You won't see Mr. Sorrentino in this court again."

Speaking outside the court, Mike admitted he was relieved legal proceedings were over as he and his sibling had solved their dispute some time ago.

He told NJ Advance Media: "I'm very happy with the outcome of the case. It was a very unfortunate incident that is now resolved and we get to move forward and live our lives.

"It was resolved months ago but this was the finality of the rulings of the court."

He also said he learned from the therapy he underwent.

He added: "Any therapy is an improvement."

Last week, the TV personality appeared in federal court with another brother, Marc, where they pleaded not guilty to tax fraud.

The siblings allegedly conspired to fail to pay federal income tax owed on income earned for "promotional activities" between 2010 and 2012.

Mike has also been accused of failing to file a tax return in 2011 after earning $1.99 million that year.

The brothers' trial for their tax fraud case will take place on December 2.