An electrical connector includes an insulative housing (1), a number of terminals (2) received in the housing and a shell (3) covering the housing thereby forming a receiving space (310). The insulative housing (1) defines a base portion (11), a tongue portion (12) extending frontward from the base portion and having numbers of passageways (19) receiving the terminals and extending through the base portion. The shell (3) include a pair of pressing portions (36) extending to the receiving space and pressing against said tongue portion (12) in a direction perpendicular to the tongue portion.