Treasury Secretary Steven Mnuchin may have violated federal ethics law on Friday by encouraging people watch a movie he produced.

At the tail end of an event with Axios’s Mike Allen, Mnuchin was asked a flurry of questions of movies given his background in the industry.

“I’m not allowed to promote anything that I’m involved in. So I just want to have the legal disclosure, you’ve asked me the question, and I am not promoting any product. But you should send all your kids to ‘Lego Batman.’”

Read:Steven Mnuchin: The man and money behind Hollywood hits

In a statement, the Treasury Department said Mnuchin’s language shows he wasn’t promoting his personal interest.

“As his statement reflects, the Secretary clearly recognized that he generally may not promote private interests and specifically gave the legal disclosure that he was not promoting a movie, but answering a question he was asked directly,” the statement read.

The Office of Government Ethics criticized the White House for not taking a tougher stance against Kellyanne Conway after she plugged Ivanka Trump’s products in a television interview.

At the event, Mnuchin was asked what was his favorite movie. “Avatar,” he replied, which is another movie he had a hand in producing. “Largest. Grossing. Film. Ever,” Mnuchin said.

Two movies he labelled “misrepresentations” — “Wolves of Wall Street” and “The Big Short.”