An optical fiber connector (100) includes a first insulative housing (1), a door (2) assembled in the first housing and an elastic piece (3) with one end retained in the first housing and the other end elastically abutting against the door. The first housing defines a top face (10), a front face (11) connecting with the top face and a pair of sidewalls (13). The first housing further defines a receiving cavity (111) opening through the front face thereof, and each sidewall defines a recess (112) opening through the top face and the inner surface of the receiving cavity near an opening of the receiving cavity. The door is movably assembled at the opening of the receiving cavity and defines a pair of shafts (22) received in the recesses. Each recess integrally defines a protrusion (113) over the shaft therein, so as to prevent the shafts from breaking off the recesses.