J.K. Rowling wrote plenty of difficult names into the “Harry Potter” series. Hermione, Nymphadora, Bartemius, the list goes on. Sure, the multisyllabic names were a mouthful, but fans eventually figured out how to pronounce them. However, not even the movies nailed the pronunciation of one name: Voldemort.

Voldemort has, apparently, never been correctly pronounced by a huge portion of the series' fans since the books started being published in 1997. On Wednesday, J.K. Rowling tweeted that she thought she was the only one who could correctly pronounce the villain's moniker. “One piece of Harry Potter trivia I always forget to mention: the 't' is silent in Voldemort, according to @jk_rowling,” Michael Lucero tweeted. Rowling was quick to confirm.

Fans should avoid pronouncing the T at the end of his name. It’s an easy mistake to make since Voldemort was a name Rowling created. The character, sometimes referred to as He Who Must Not Be Named, developed the moniker by rearranging the letters of his real name, Tom Marvolo Riddle, to spell out “I Am Lord Voldemort.”

While very few fans in general were doing this, it seems that French-speaking fans were always leaving off the last letter. Silent T's are very common at the end of French words.

The mispronunciation apparently didn’t bother the author — at least not as much as the blunders made with Hermione’s name. After struggling to get readers to say the witch’s name correctly, Rowling wrote a chapter into “Harry Potter and the Goblet of Fire” where the character has to teach her Yule Ball date, Viktor Krum, to pronounce her name.

While the actors got Hermione’s name right in the eight films, the cast wasn’t as accurate with Voldemort’s name. Watch Daniel Radcliffe, who plays lead Harry Potter in the film franchise, pronounce Voldemort incorrectly below:

Rowling will have to make sure the actors in “Fantastic Beasts and Where to Find Them” can all pronounce their names correctly. The “Harry Potter” spinoff, which Rowling penned, started filming at Leavesden Studios in England last month. Though Voldemort won’t be around, one character is named Porpentina, so it looks like Rowling is continuing her trend of unique names.

“Fantastic Beasts and Where to Find Them” hits theaters on Nov. 18, 2016.