A device for fastening a planar object to a construction, including a first holding element and a second holding element which can be interlockingly connected to the first holding element. The first holding element, which can be connected to the construction or to the object or is an integral part of the construction or of the object, has a C- or U-shaped inner profile, in that the second holding element, which can be connected to the object or the construction or is an integral part of the object or the construction, has a C- or U-shaped outer profile, and in that the C- or U-shaped outer profile can be interlockingly accommodated in the inner profile and can be clamped against the inner profile by means of a clamping element.