Facebook users can finally stop one of the site's biggest profiles from clogging up their timeline, after the social network fixed a bug that made it impossible to block its boss Mark Zuckerberg.

Facebook users have had the ability to block any account for some time, but in September it emerged that the Facebook founder's account was immune from users seeking to ignore his public relations updates and awkward live video broadcasts.

Users trying to block Zuckerberg were met with the message: "This profile can't be blocked for now". The issue was not intentional, according to Facebook, but a side effect of a system that prevented users being blocked en masse, such as following a malicious viral campaign.

Facebook has now fixed the block on Zuckerberg after the issue was brought to light in September. Now, when users block Zuckerberg they are met with the message: "You've blocked Mark Zuckerberg. We're sorry that you've had this experience."

When users block an account on Facebook posts from that profile no longer appear on their timeline and they cannot see, message or interact with each other. Users are not notified if their profile is blocked.