Abstract: This invention relates to an improved electric strike assembly (1) including a keeper (6) which is mounted to a housing (8). A locking means including an electrical actuator (9) and a detent (10) configured to resist adjustment of the detent (10) from an active lock condition. The detent (10) is preferably grooved so as to catch on the keeper (6) or housing (8) preventing it moving from an active condition.