Dan Aykroyd paid his respects to the late Ivan Reitman.

Reitman passed away in his sleep at the age of 75.

Aykroyd said he was “feeling heartbreak” for Reitman’s family.

He called Reitman “one of the last great creative talents of the big screen era.”

He added that his loss “crumples me.”

 “Now on Thursdays who am I gonna call?” he added.

Costar Ernie Hudson also paid tribute, saying he was “deeply saddened” by his loss.

 “Truly a great man and filmmaker,” Hudson said of Reitman.

He said that it was an “honor and privilege of knowing and working with” him.