By Christopher Rosen
Updated July 28, 2016 at 10:22 PM EDT
Aidan Monaghan

Matt Damon has made his fair share of R-rated movies — from Good Will Hunting and The Departed to Elysium and Saving Private Ryan — which limits the type of films Damon can show his daughters.

“The only movie up until recently they had seen was Spirit: Stallion of the Cimarron, which was my animated movie,” Damon told Jessica Shaw during a SiriusXM town hall on EW Radio (ch. 105) on Thursday.

In fact, it wasn’t until The Martian that Damon showed his 10-year-old daughter Isabella one of his more mature features. “When The Martian came out, a bunch of my 10-year-old’s classmates parents took them to it, and they were talking to her about it,” he said. “I thought, ‘Wow, 10, I thought maybe that would be on the cusp.’ But talking to those parents and to these other kids, I said, I guess she’s ready.”

The verdict? “She liked it. She got it. I sat with her for the sewing up of my stomach,” Damon said, referring to a scene where his character is injured. “Besides that it was just some four-letter words which she has heard escape from my mouth on occasion.”

Watch the interview above; Damon’s new film, Jason Bourne, is out Friday.