Clay Aiken is apologizing for defending Donald Trump, claiming that while he always felt he'd make a terrible president he regrets claiming his Apprentice boss wasn't a racist.

After Trump's response to the crisis in Charlottesville, the former American Idol star and congressional candidate tweeted out his apology, calling himself "a f*cking dumbass."

"I’ve always thought he would be a dumpster fire as a president, and I was right about that," he added. "I just didn’t think he was racist #wrong.”

Aiken appeared with Trump on The Celebrity Apprentice in 2012, lasting all the way to the finale, though he ultimately lost to Arsenio Hall. The out singer also reportedly called the future president for advice when he ran for Congress in North Carolina two years later.

In the past, Aiken called Trump "a nice guy," and disagreed with Democrats disdain for him. "I don't think he's a fascist, I don't think he's a racist," Aiken told Fox Business News."I think he's a Democrat."

Back in 2015 Aiken told CNN he considered Trump a "friend," and that he "liked him as a person."

Just last month, he told North Carolina's News & Observer that incendiary rhetoric against Trump "doesn’t help at all,”

“It doesn’t help change any moderate voters. You’re not going to change these voters’ minds by telling them they’re wrong.”

But the American Idol finalist is defending himself against attacks on Twitter, insisting he's never actually been a Trump "supporter."