The Princess of Wales honors a great many royal traditions, but according to a new royal book, there’s one she absolutely refused to take part in—or, said more accurately, let her kids Prince George, Princess Charlotte, and Prince Louis take part in.

In his new book Yes Ma’am: The Secret Life of Royal Servants, royal author Tom Quinn wrote (per an excerpt from The Daily Mail) that “[King] Charles’ daughter-in-law, Catherine, Princess of Wales, has put her foot down and insisted there will be no blooding for her children.”

What is blooding, you may ask? It’s a royal family tradition where, when going hunting with royal children, they smear them with the blood of his or her first kill. Disgusting? Yes, on every level. And it turns out that the Princess of Wales isn’t the only one opposed—her husband Prince William, Quinn wrote in his previous book Gilded Youth, is also against blooding, writing that the future king has been “struggling with the traditional pastimes of the royal family as they become ever more unpopular with the public.”

William and his brother Prince Harry took part in blooding themselves when they were boys, and Harry included details about shooting when he was a young boy in his memoir that we’ll, pun fully intended, Spare you from.

As for Harry’s older brother, “William loves shooting—a love he shares with his father—but he is also conscious that the tide is now moving against what many people now refer to as blood sports (the royals prefer to refer to them as field sports),” Quinn wrote. “But are they suitable for George, Charlotte, and Louis?”

The decision at the Wales family home of Adelaide Cottage seems unanimous: it’s a hard pass when it comes to this royal tradition.