Brian Snyder/Reuters Donald Trump spoke about the dating promise with Howard Stern in 1999.

Republican presidential nominee Donald Trump said in a 1999 interview that he once promised his daughter Ivanka he’d never date a girl younger than her.

Ivanka Trump would have been 17 in 1999, when Trump made the claim to radio host Howard Stern, according to the New York Daily News.

“I have a deal with her. She’s 17 and doing great ― Ivanka. She made me promise, swear to her that I would never date a girl younger than her,” Trump said. “So as she grows older, the field is getting very limited.”

Trump divorced his second wife, Marla Maples, in 1999, two years after they separated. He had met his third wife, Melania, in 1998, when the model was 28 years old. They wed in 2005.

Trump has been slammed for his rhetoric about women throughout his campaign. That criticism was amplified this week after Democratic nominee Hillary Clinton brought up Trump’s incendiary comments about former Miss Universe Alicia Machado during the first presidential debate.

After Trump continued to slam Machado in a series of late-night tweets, Clinton took down Trump’s comments on Twitter, highlighting his other attacks on women.

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.