A cable connector assembly (1) includes an insulative housing (10), a number of contacts (12) disposed in the housing, a cover (15) molded onto the housing and a locking member (16) assembled to the housing and the cover. The locking member defines about a front end thereof a retention portion (160) for securing the locking member on the housing, an actuating portion (162) about a rear end thereof, and a locking portion (161) extending rearwards across the retention portion and connecting to the actuating portion.