The Korea Media Rating Board have decided that Lady Gaga's forthcoming show in South Korea isn't suitable for under-18s.
The show at Seoul's Olympic Stadium had an initial rating of 12 or over, but the upper age limit has now been increased.
"Our company will respect the board's decision and refund all ticketholders younger than 18," a spokesperson for the show's official sponsor Hyundai Card told AFP.
The rating change follows criticism of Lady Gaga and her 'gigs' by leading South Korean religious groups.