Bill Murray has revealed that he was happy to join the "jolly" new line-up of Ghostbusters on the set of director Paul Feig's female-led reboot.
The actor, who appeared as Dr Peter Venkman in the original 1984 version, is not reprising his role, but playing a new character.
He is reportedly playing a spiritual medium trying to debunk the Ghostbusters' work, who are played by Melissa McCarthey and Kristen Wiig, Kate McKinnon and Leslie Jones.
Murray said of filming the cameo: "They were incredibly nice to ask me, and I really enjoyed being there. They have such a jolly group, and they are going to have great success with this project. I didn't want to overshadow [them] or anything, and I feel really good about it.
"I like those girls a lot. I mean, I really do. They are tough to say no to. And Paul is a real nice fellow."
The actor said that he mulled over the decision to appear in the Ghostbusters reboot, adding to Vulture: "I thought about it for a very long time. Like, many, many months. No, that's not right. I was seriously thinking about this for years, really.
"It kept eating at me, and I really respect those girls. And then I started to feel like if I didn't do this movie, maybe somebody would write a bad review or something, thinking there was some sort of disapproval [on my part]."
Murray will appear alongside his former Ghostbusters star Dan Aykroyd as well as new cast members Chris Hemsworth and Neil Casey.
Ghostbusters is slated to hit cinemas on July 15, 2016.