Some over-eager adults avada kedavra-d a bunch of kids’ chance to learn about owls and potions at a Harry Potter event by demanding the right to attend themselves.

The City of Perth Library planned to host a “Harry Potter Night” on April 30, but with 11,000 people RSVP’d as attending on the Facebook event, the library decided it was best to postpone. It was originally intended for young patrons between the ages of 12 and 18, but those old enough to be out of Hogwarts really wanted to go. Instead of realizing it’s best to let the kids have their fun, olds chimed in to say that they were “devastated” and declare themselves “MASSIVE” Harry Potter fans.

Listen, this sounds like a great way to spend an evening at the library, but doesn’t exactly sound life-changing. According to WA Today, the guests were just going to be learning about “owls from the WA Bird of Prey Centre and attending a ‘potions class’ with scientists from the ChemCentre.” Not like there was an actual charms class or Daniel Radcliffe appearance.

Even so, adults had to go all Moaning Myrtle. With a staggering number of people seeking to attend, the library ultimately announced on the Facebook event that they’d be rescheduling the event.

Dear witches, wizards and muggles Thank you for the tremendous interest in the Harry Potter event, the Professors here at the City of Perth Library are both thrilled and overwhelmed by the response. We want to be able to provide a magical experience for all Library patrons, as such the Harry Potter event has been postponed and we are looking at how we can accommodate many more witches, wizards, muggles and their families. No date has been set. For more information keep a watchful eye out for the Owl Postal Service or follow us on Facebook. Yours Sincerely

Professors of Youth ServicesThe Attic, City of Perth Library

Professor McGonagall would be so disappointed by this childish behavior.

H/T WA Today