A disc brake for an automotive vehicle which includes: - a brake disc which extends in a plane transverse to an axial orientation axis of rotation of the disc; - a fixed support which is fixed with respect to a vehicle chassis; - at least one brake pad which includes a vertical transverse plate which carries a friction lining a friction transverse face of which cooperates with an associated brake track of the disc, the brake pad being axially slidingly mounted in the fixed support between an active front position in which said friction face bears on the associated brake track of the disc, and an inactive rear position in which said friction face is axially spaced from said associated brake track of the disc, by a determined operating play; - and at least one elastic return spring for the elastic return of the brake pad to its inactive position including at least one attachment portion for attaching the elastic return spring on the fixed support and including a connecting branch which is directly or indirectly connected to the brake pad, and wherein said at least one brake pad includes at least one slidably guiding side lug which is received in an axial orientation slider of the fixed support; attachment portion for attaching the elastic return spring to the disc brake including a rigid blade which extends in a plane parallel to the axial displacement direction of the brake pad, and which is axially inserted in said axial orientation slider of the fixed support, wherein the blade is planar and rigid with parallel edges and is axially inserted and housed in a complementary notch of said slider, characterised in that the attachment portion for attaching the elastic return spring to the fixed support includes a stop which is in contact with a face facing the fixed support to block the axial sliding of the elastic return spring in the direction corresponding to the axial displacement of the brake pad to its active braking position, and in that the attachment portion for attaching the elastic return spring to the fixed support includes a stabilising leg of the elastic return spring which cooperates with a portion of said slider. - a brake disc which extends in a plane transverse to an axial orientation axis of rotation of the disc; - a fixed support which is fixed with respect to a vehicle chassis; - at least one brake pad which includes a vertical transverse plate which carries a friction lining a friction transverse face of which cooperates with an associated brake track of the disc, the brake pad being axially slidingly mounted in the fixed support between an active front position in which said friction face bears on the associated brake track of the disc, and an inactive rear position in which said friction face is axially spaced from said associated brake track of the disc, by a determined operating play; - and at least one elastic return spring for the elastic return of the brake pad to its inactive position including at least one attachment portion for attaching the elastic return spring on the fixed support and including a connecting branch which is directly or indirectly connected to the brake pad, and wherein said at least one brake pad includes at least one slidably guiding side lug which is received in an axial orientation slider of the fixed support; attachment portion for attaching the elastic return spring to the disc brake including a rigid blade which extends in a plane parallel to the axial displacement direction of the brake pad, and which is axially inserted in said axial orientation slider of the fixed support, wherein the blade is planar and rigid with parallel edges and is axially inserted and housed in a complementary notch of said slider, characterised in that the attachment portion for attaching the elastic return spring to the fixed support includes a stop which is in contact with a face facing the fixed support to block the axial sliding of the elastic return spring in the direction corresponding to the axial displacement of the brake pad to its active braking position, and in that the attachment portion for attaching the elastic return spring to the fixed support includes a stabilising leg of the elastic return spring which cooperates with a portion of said slider.