Catherine O’Hara will make a posthumous appearance in Martin Short’s forthcoming Netflix documentary, “Marty, Life is Short.”

The late “Schitt’s Creek” star — who first met Short in the early ’70s while coming up in Toronto’s improv scene — made a brief cameo in the documentary’s trailer, which was released on Friday.

“I feel like he could improvise to eternity. Couldn’t he?” O’Hara — who conducted her interview before her death earlier this year — says in the teaser.

A second clip included in the trailer showed Short playfully filming O’Hara, telling her “I loved you in ‘Home Alone!’ You were wonderful!” while she laughs at his compliment.

Directed by Short’s longtime friend Lawrence Kasdan, the film uses “beautiful, intimate, never-before-seen” archival footage to chronicle the comedian’s life and career as well as his relationship with grief.

“Marty, Life is Short” will premiere May 12 on the streaming platform.

O’Hara died at her home in Los Angeles following a brief illness on Jan. 30, her agency confirmed in a statement to Page Six. She was 71.

Page Six exclusively learned that the Los Angeles Fire Department responded to a call at the “Beetlejuice” star’s Brentwood home around 4:48 a.m. after she experienced “breathing difficulty.”

Her official cause of death was listed by the County of Los Angeles Department of Public Health as a pulmonary embolism, meaning, she suffered a blood clot in her lungs. Though, rectal cancer was noted as the underlying cause.

O’Hara was cremated, per her death certificate, with husband Bo Welch receiving her remains.

The actress was laid to rest in an intimate funeral service held at St. Martin of Tours Church in Los Angeles on Saturday, Feb. 14.

Actress Kelly Lynch shared a snapshot of the late star’s funeral booklet with her Instagram followers as she honored O’Hara’s life with a touching tribute.

“Rest in peace darling Catherine,” Lynch captioned her post. “And did you get what you wanted from this life, even so? I did. And what did you want? To call myself beloved, to feel myself beloved on the earth.”