Journalist Bob Woodward is writing a follow-up to his bestselling 2018 book Fear: Trump in the White House, and reports of the book came from a very unlikely source.

President Trump appeared to break the news in an interview on Friday with Laura Ingraham on Fox News, the Guardian reports.

“I was interviewed by a very, very good writer, reporter,” Trump told Ingraham. “I can say Bob Woodward. He said he’s doing something and this time I said, ‘Maybe I’ll sit down.’”

Trump declined to speak to Woodward for Fear, making it all the more surprising that he’s cooperating with the reporter on his new book.

Trump’s comment praising Woodward as a “very good writer” is a remarkable about-face for the president, who in 2018 slammed Fear as a “scam” and a “joke.”

In a tweet on Sunday, New York Times reporter Maggie Haberman said Trump and Woodward have spoken twice for the reporter’s upcoming book:

And Josh Dawsey of the Washington Post tweeted that Trump has asked his aides to participate in interviews with Woodward:

Woodward’s Fear was one of the bestselling books of 2018, and the fastest-selling book in the history of publisher Simon Schuster. Kirkus named it one of the best nonfiction books of the year, its reviewer writing, “Woodward’s book will shock only those who haven’t been paying attention. For those who have, it reinforces a strongly emerging narrative that there’s a serious need for grown-ups on Pennsylvania Avenue—grown-ups who have read the Constitution.”

Michael Schaub is an Austin, Texas–based journalist and regular contributor to NPR.