A securing sleeve for securing a shield of an electric conductor to a shielding contact includes a securing section having a bottom disposed between a pair of wings. The bottom supporting the electric conductor. The wings are spaced apart at a free end of each of the wings distal from the bottom by a slot extending in an axial direction in an open state of the securing sleeve. The wings have a plurality of complementary positive locking element at the free ends that secure the securing sleeve in a circumferential direction in a closed state.