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Mike 'The Situation' Sorrentino is suing Devotion Spirits for millions of dollars for what he claims to be a breach of contract in court filings obtained by ET.

In the documents, The Situation claims that his endorsement deal with the company called for an increase of ownership stake from 8 percent to 10 percent after one year. The papers claim that Devotion failed to pay him the 2 percent increase, which the papers estimate could be worth as much as $5 million.

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The filings go on to claim that The Situation also missed out on a $400,000 "buy back option" after two years, as per their agreement, according to the papers.

Devotion Spirits makes a protein-infused vodka that can support lean body mass. The Situation reportedly signed a deal with the company in 2010.