A jumper for a horological movement is of the type comprising a base (42) and an elastically deformable arm (80) extending from said base (42) and provided with an abutment surface (82) intended to cooperate with a notch of a mobile. The base (42) has a support member (52) carrying said arm (80). It comprises two connecting elements (54, 56) each connecting one end of the support element to a fixed element of the base (42). The jumper is associated with a control member (86) arranged in such a way that an axial rotation of said control member (86) causes a displacement of said support member by deformation of a frame including the support member and both connecting elements form sides.
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