It’s the season of political endorsements in the United States, and several bosses in Las Vegas are already announcing who they will back in the November election—except for Steve Wynn, who has decided to stay on the sidelines this time around.

The outspoken CEO and chairman of Las Vegas-based Wynn Resorts announced that he will not vote for his friend and longtime business rival Donald Trump in his presidential run. But neither is the self-identified Democratic Party supporter endorsing his party’s presidential nominee, Hillary Clinton.

“I’m a friend of Donald Trump but I have not supported either candidate in the presidency as yet—I’m friendly with Bill Clinton, I know Hillary,” Wynn told Bloomberg.

The casino boss is tired of the political mudslinging between the two candidates, telling the news outlet that he yearns “for a more adult discussion.”