Flexible suspension of colter element (1) of a snowplough furnished with a body (5), a blade (3) as its extension, colter element (1) that gets in contact with the surface to be ploughed, where for the colter element (1) a tilt suited for the purpose is arranged, a.o. a cutting angle. Colter element (1) is fitted to dodge an obstacle in its cutting angle by backing up, whereby the fixing arrangement of colter element (1) has an open space formed for moving plate (13) fitted as extension of the colter element, in which space said moving plate is arranged to glide, and the arrangement includes a spring organ (9) the spring impact of which is arranged to hinder the colter element from backing up.