Mel Gibson was accused of fraud, breach of contract and unfair business practices in a lawsuit filed Monday by the co-writer of “The Passion of The Christ.”

Benedict Fitzgerald, co-writer of the screenplay for Mel Gibson’s 2004 blockbuster, filed in Los Angeles Superior Court a lawsuit against the actor and his production company “Icon Productions,” claiming that he had been told that it would be a low-budget movie. Thus, he had been misled into accepting a small payment for the script.

Benedict Fitzgerald claims Mel Gibson told him that the movie would have a budget between 4 and $7 million, when in fact it  had an estimated budget of 25 to $50 million, International Herald Tribune reports. Fitzgerald claimed he agreed to “a salary substantially less than what he would have taken had he known the true budget for the film.”

Moreover, Fitzgerald claims that he had been refused any extra money when the film became a box office hit, making $600 million worldwide.

He was paid only $75,000 and he had to borrow $200,000 from Gibson to cover expenses, according to People.com.

People also reports that George R. Hedges, an attorney for Icon, said that Fitzgerald was “handsomely compensated—a very significant amount of money for any writer on any project,” he said.

Fitzgerald is asking for unspecified damages.