Due an illness from one of their bandmembers, AC/DC are delaying recording sessions for their next record.

The group is looking forward to create the follow up to 2008's 'Black Ice', but singer Brian Johnson reveals their studio time has been put on hold to allow one of his bandmates to recover from a mystery illness.

Speaking in a recent interview, Johnson, who does not name the bandmate affected, explains, "Hopefully this year we can get back together again. One of the boys is a little sick. I can't say anything, but he's getting better."

When asked by the presenter if the illness is terminal, Johnson adds, "No, but just bad. He's doing wonderful. Full recovery fully expected."