A hopper is described for receiving goods, such as for example agricultural goods. It comprises a bottom wall (5) and a number of side walls (1,2,3,4) extending upwardly from said bottom wall (5). The side walls (1,2,3,4) belonging to each pair of adjacent side walls enclose an angle, and the side walls (1,2,3,4) at their top are provided with an edge section (6) extending inclined upwardly. Wall extensions (8) are positioned on top of the side walls (1,2,3,4) of at least one pair of adjacent side walls, which wall extensions (8) at their lower end each are provided with recesses for matingly receiving the inclined edge (6) sections of the corresponding side walls (1,2,3,4). Said wall extensions (8) are interconnected by connecting means, for example angled plates (19) and bolts (22) or screws.