With the release of Fantastic Beasts: The Crimes of Grindelwald just a week away, ​JK Rowling is reflecting on her time writing the book that inspired the first film, Fantastic Beasts and Where to Find Them, and why she decided to expand on the Wizarding World she had created with the Harry Potter series.

While on the red carpet for the premiere of ​The Crimes of Grindelwald in Paris last week, Rowling spoke about how appreciative she is of the Harry Potter fandom that allows her to keep writing books and films. She also revealed the reason why she wanted to continue past the original series and write these movies: Potterheads!

"This fandom is the most remarkable in the world, for me, obviously," Rowling said. "Their loyalty and their passion for these stories really is the reason that I went back, because, without that, I don’t think I would have written these movies."

So there you have it, Potterheads: you really have yourselves to thank for the ​Potter universe's continued expansion. Keep it up and maybe Rowling will keep giving us more. In the meantime, Fantastic Beasts 2 hits theaters on November 16.