Former AC DC rocker Malcolm Young has a pacemaker to correct an ongoing heart problem.

The guitarist stepped down from the legendary rock band last year (14) as he battles dementia, and last month (Dec14) his brother and bandmate Angus Young revealed Malcolm had also undergone heart and lung procedures.

Now it has emerged the poorly star had a pacemaker fitted in his chest several years ago and he broke the news to the band's singer Brian Johnson in a light-hearted manner over dinner.

Johnson tells Q magazine, "This is typical Malcolm - he got hold of my hand and (banged it on his chest). He says: 'Pacemaker. F**king good, mate.' He scared the s**t out of us! And there's a twinkle in his eye, he was tickled pink. It was like he was showing us a new fuzzbox or something!"