Princess Diana recalled how her mom ‘snapped’ King Charles III’s ‘head off’ for a comment he made about Prince Harry.

King Charles III upset Princess Diana’s mother at Prince Harry’s christening. How? By remarking on his own disappointment at becoming a father to another son. Ahead, what Diana recalled her husband saying at the Duke of Sussex’s christening. Plus, how her mom “snapped” the king’s “head off” for the remark.

King Charles said they were ‘disappointed’ to get Harry instead of a baby girl

Diana and King Charles became parents for the second time on Sept. 15, 1984. They welcomed Harry, formally known as Henry Charles Albert David Mountbatten-Windsor, at London, England’s St. Mary’s Hospital.

Like Prince William before him, Harry made his debut on the steps of the Lindo Wing in the arms of his parents. His christening took place on Dec. 21, 1984, at St. George’s Chapel, Windsor Castle.

(Sound familiar? St. George’s Chapel is the setting of many royal family events, including Harry’s 2019 wedding to Meghan Markle.) Diana reflected on Harry’s christening during secret tape recordings for Andrew Morton’s 1992 biography, Diana: Her True Story.

At one point, Diana shared how King Charles said something to her mother, Frances Shand Kydd, that made for a tense moment.

“Charles went to talk to my mother at Harry’s christening and said: ‘We were so disappointed—we thought it would be a girl,’” (via Newsweek). “Mummy [sic] snapped his head off, saying: ‘You should realize how lucky you are to have a child that’s normal.’”

“Ever since that day, the shutters have come down,” Diana added. “And that’s what he does when he gets somebody answering back at him.”

Prince Harry’s christening | PA Images via Getty Images

He said the same thing immediately after Diana gave birth to Harry

Elsewhere in Morton’s book, Diana revealed how her husband, who’d “desperately” wanted a daughter, reacted to discovering they were parents to another son.

(The news wasn’t a surprise to Diana. She’d known it for some time, learning she’d been carrying a boy months earlier and keeping it a secret.)

King Charles, she recalled, made his “dismay” known when he went to the hospital to see Diana and their newborn baby in the hospital.

“Charles always wanted a girl,” she said. “Harry was a boy. His first comment was, ‘Oh God, it’s a boy.’ His second: ‘And he’s even got red hair.’”