When you’re taking a headcount at your next get-together, don’t forget to include your Facebook friends who aren’t on Foursquare. Today, the check-in service announced a new feature of Monday’s iOS update that lets you mention your friends in your check-in without making them join the network.

“Just tap the add friend icon when you’re checking in and scroll down to find them,” Foursquare explained in a blog post. “Your friends will get a notification on Facebook, and will be tagged in the Facebook post if you choose to share it there.”

The team also said that the update will be available on the Android soon. Now Foursquare users have no excuse to check in through Facebook instead.