An electrical connector (100) includes an insulative housing (1) and at least one contact (2) received and retained in the housing. The housing defines a mating face (10), a receiving cavity (101) running through the mating face for receiving a mating connector (200) and at least one groove (131) disposed at a sidewall of the receiving cavity and communicating with the receiving cavity. The at least one contact defines a retaining portion (21) retained in the at least one groove, a contacting portion (23) bending into the cavity and at least one guiding portion (24) extending from the contacting portion along a mating direction for guiding the mating connector to enter into the receiving cavity, and a free edge (241) of the at least one guiding portion extends into the corresponding at least one groove.