A locking arrangement, including a panel with a locking groove; an edge strip with a first form; as well as a locking element placed at least partly or entirely between the edge strip and the panel. The locking element includes a protrusion inserted in the locking groove of the panel and configured to prevent the panel from detaching from the edge strip, and a second form matching with and received by the first form of the edge strip, and configured to prevent the locking element from detaching from the edge strip. In the presented method for assembling the locking arrangement, in its first step, the locking element is placed against the panel so that the protrusion is inserted in the locking groove of the panel, after which they are installed in the edge strip.