Nearly two decades after it was first filmed, Jimmy Kimmel has made Emma Watson watch an embarrassing old Harry Potter outtake in which the British star inadvertently mimes her co-star's lines.

Appearing on Jimmy Kimmel Live to promote her latest film, a live-action remake of Beauty and the BeastWatson was shown an early clip from Sorcerer's Stone of her playing Hermoine alongside co-stars Daniel Radcliffe and Rupert Grint. When Rupert (playing Ron Weasley) appears to momentarily lose his lines, Watson steps in to help.

“You laugh, this is actually quite traumatic for me because I created issues because of this,” she said after being shown the clip. “Yes, I would ruin takes. [Director] Chris [Columbus] would be like, “Cut. Emma, you’re doing it again. You’re mouthing Dan’s lines,’ and I’d be like, ‘Ooo, I’m so sorry, so sorry. Oh, I feel so bad.’ But I couldn’t help myself.”

Watch the clip above, and after you've finished, check out the six new original Netflix shows you’ll be binge-watching next.

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