A connector has a housing (12) and a frame (15). The housing (12) has a wall (58) and a lock (19) that is resiliently deformable outward in the thickness direction of the wall (58). The lock (19) engages an interlocking portion (18) in the frame (15) when the housing (12) and the frame (15) are connected properly. A bracket (16) is inserted into a deformation area (62) for the lock (19) to prevent deformation of the lock (19). Thus, the lock (19) remains engaged with the interlocking portion (18) even if a force acts in a direction to separate the housing (12) and the frame (15).