Sitting down for an interview with SiriusXM on Thursday, actress Pam Grier said Samuel L. Jackson often ad-libbed the N-word when he starred in Quentin Tarantino’s films. Grier, who starred in Tarantino’s 1997 film Jackie Brown, said the director was often caught off guard when Jackson used the N-word.

“That was Sam’s acting craft doing it,” Grier told host Bevy Smith on SiriusXM. “So — and people brought that up. And Quentin says, ‘I don’t know why they do it. I didn’t do it.’ And Sam said, ‘No, I did it. I said it.’”