Apple is asking people to return their Mac and iOS travel adapters after multiple reports of the two-prong plugs electrocuting users.

The Cupertino maker of iStuffs said that for more than a decade it has been selling adapters that can break and, when touched, give an electrical shock. The problem affects two-prong adapters used with outlets in Argentina, Australia, Brazil, Continental Europe, New Zealand and South Korea. Apple said it has received 12 reports of users being electrocuted by the plugs.