An electrical connector includes an insulative housing and a number of terminals retained in the insulative housing. The insulative housing has a mating surface, a mounting surface, and a slot going through the mounting surface. The terminal received in the slot includes an interference portion retained in the slot, a contacting portion disposed around the mating surface, and a soldering leg extending downwardly beyond the mounting surface. The interference portion has two barbs disposed at two opposite sides thereof, respectively. The terminal includes a blocking portion connecting between the interference portion and the soldering leg. The width of the blocking portion is greater than the width of the interference portion.