HBO Max Edits 'Harry Potter 20th Anniversary: Return to Hogwarts' To Fix Its Mistakes

The highly-anticipated special Harry Potter 20th Anniversary: Return to Hogwarts delighted viewers on HBO Max, but it wasn't without its mistakes.

The creators of the show have now re-uploaded the special onto the streaming service after the fans noticed a glaring mistake, and another was noticed by one of the cast members.

Many major cast members returned for the HBO Max special, including Daniel Radcliffe, Rupert Grint, Emma Watson, Robbie Coltrane, Matthew Lewis, Tom Felton and more.

However, Harry Potter author J.K. Rowling, who has been accused of being transphobic many times in the last few years, was not part of the special.

The two flubs didn't stop Harry Potter 20th Anniversary: Return to Hogwarts from being a hit among fans, and the entire special (with its two new corrections) is still available to watch exclusively on HBO Max now.

Emma Watson or Emma Roberts?

The first mistake in Harry Potter 20th Anniversary: Return to Hogwarts was noticed by eagle-eyed viewers, and one particularly passionate fan of the actress Emma Roberts.

Much of the special featured images of Daniel Radcliffe, Rupert Grint and Emma Watson as children, although one image used turned out to be a picture of Roberts, not Watson.

Twitter user @vee_delmonico99 brought the mistake to the public's attention, getting over 7,000 likes for sharing the picture of Roberts as it was used in the special, and another when it was first posted on Roberts' Instagram account.

The original picture that Roberts posted on Instagram in February 2012 has now picked up a second wind, with fans sarcastically commenting Harry Potter references.

One wrote, "Your English accent in HP was so good," while another said "Emma Watson looks so cute in this pic!"

HBO Max owned up to its mistake and thanked fans for finding the error.

Producers of Harry Potter 20th Anniversary: Return to Hogwarts said in a statement, "Well spotted Harry Potter fans! You brought an editing mistake of a mislabeled photograph to our attention. New version is up now."

Mixing Up the Weasley Twins

Fans weren't the only ones who spotted a mistake in the HBO Max special. Oliver Phelps, who played George Weasley in several Harry Potter movies, pointed out an error on his own Instagram account, one that has surely been made many times throughout his life.

He played one of the mischievous Weasley twins, along with his real life twin brother James, and ironically the creators of Harry Potter 20th Anniversary: Return to Hogwarts mixed up the actors when crediting them onscreen.

Oliver found the funny side of the mistake and put it down to somebody getting their revenge after all of the Weasley Twins' pranks over the years.

Their Harry Potter cast members joined in the fun as Matthew Lewis (Neville Longbottom) wrote, "This is legit hilarious. Dude. Wtf? Haha."

Tom Felton, who played the Slytherin student Draco Malfoy, even owned up to the mistake. He commented, "It was my doing :) #weaslebee #returntohogwarts" followed by a snake and a lion emoji, which implied that Slytherin was superior to the Weasley's Gryffindor.

HBO Max nor the show's producers publicly acknowledged this mistake but it has also been corrected within the show.

Harry Potter 20th Anniversary: Return to Hogwarts is available to watch exclusively on HBO Max now.

Harry Potter 20th Anniversary: Return to Hogwarts
The HBO Max exclusive "Harry Potter 20th Anniversary: Return to Hogwarts" is available to watch now, with the original mistakes corrected. HBO Max