(CNN) - Connecting to Facebook is about to get a bit slower for the site's millions of users, but there's a good reason.
Facebook is in the process of moving all of its users in North America to a type of internet connection that's not as fast, but more secure.
By default, you'll soon start using an https connection, as opposed to the less-secure http. Most retail and banking sites use https.
Facebook says it has made infrastructure improvements so the transition will slow down connections only slightly. Users who are unhappy with the change can opt out.