Matthew Lewis says Alan Rickman took him aside for career advice on the last day of 'Harry Potter' filming

On the last day of filming "Harry Potter," Matthew Lewis thanked Alan Rickman for their work together.

Rickman then invited Lewis into his trailer and gave Lewis advice about his career, Lewis said.

Lewis said that Rickman was "incredible" and that he never treated anyone as less than his equal.

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Alan Rickman already had a career spanning more than 20 years by the time he took on the menacing role of Severus Snape in "Harry Potter and the Sorcerer's Stone." He'd had starring roles in major Hollywood movies such as "Die Hard" and had worked with some of the industry's biggest names, including Bruce Willis, Kevin Costner, and Liam Neeson.

However, one of the young "Potter" actors, Matthew Lewis, managed to pluck up the courage to approach Rickman on Rickman's last day of filming the franchise. Lewis, who played Neville Longbottom, ended up in Rickman's trailer, where the British veteran gave him a cup of tea and some career advice.

Lewis recalled the touching story during a recent appearance on the podcast "Inside of You" with Michael Rosenbaum.

"I went to his trailer ... and I just said to him, 'Hey, I know it's your last day, and I just wanted to say this has been incredible to have worked with you for this long,'" Lewis said.

Matthew Lewis as Neville Longbottom and Rickman as Snape in "Harry Potter." Warner Bros. Pictures

Lewis said he told Rickman that he had been "terrified" of him but had appreciated the time they worked together despite not speaking very much. Rickman, Lewis said, was "incredible."

"I just want to say thank you for allowing me to work with you for 10 years and not ever shouting at me or treating any of us as anything less than your equal," Lewis said he told Rickman.

Lewis continued: "He was like, 'Come on in.' And he put the kettle on, and we had a cup of tea, and we just chatted about what I was going to do in my career going forward and what he recommended I do."

Rickman, who died of cancer in 2016 at age 69, left an impression on many of his younger costars in the "Potter" series.

Harry Potter himself, Daniel Radcliffe, left a touching tribute to Rickman on Facebook shortly after the actor's death. Radcliffe wrote that Rickman was "one of the loyalest and most supportive people I've ever met in the film industry."

"He was so encouraging of me both on set and in the years post-Potter. I'm pretty sure he came and saw everything I ever did on stage both in London and New York. He didn't have to do that," Radcliffe wrote.

Radcliffe told Entertainment Weekly in 2011 that Rickman, who starred in all eight "Potter" movies, deserved the Oscar for best supporting actor for the final movie, "Harry Potter and the Deathly Hallows: Part 2."

"I don't think there is going to be another performance from an actor in a supporting role that is so powerful," Radcliffe said.

While that nomination never materialized, Rickman did win a BAFTA award for best supporting actor for his playful turn as the Sheriff of Nottingham in 1991's "Robin Hood: Prince of Thieves." Rickman also starred in "Love Actually," "Sweeney Todd: The Demon Barber of Fleet Street," and "The Hitchhiker's Guide to the Galaxy."

Fans of the actor can spend some more time with him in 2022 — Rickman's 27 diaries are set to be published as one book.