The original “Ghostbusters” director has a tiny cameo in “Ghostbusters: Afterlife.”

The original director is Ivan Reitman, who passed away earlier this month at 75.

His son, Jason Reitman, directed “Ghostbusters: Afterlife.”

Jason revealed to Empire that his father had a tiny role.

He says that the close-up of the hand when Venkman turns on his proton pack is actually his father’s hand!

Bill Murray had already finished his lines and left the set

Jason revealed that his father had never donned one of the “Ghostbusters” costumes before.

“That was really special,” he added.

After he passed, Jason tweeted a short statement saying, “I’ve lost my hero.”