A dishwasher comprises a basket (10) for accommodating articles to be cleaned, said basket comprising a basket floor and a plurality of holding spikes (30) projecting upwardly from the basket floor, and a rotatable spray arm (12) located below the basket, the spray arm comprising a plurality of spray nozzles (20) oriented to direct water jets towards the basket. In accordance with the present invention the basket (10) comprises at least one fixed holding spike (30) or a fixture (90) for a removable holding spike (92) the placement of which coincides with the path of movement of one of the spray nozzles (20), said fixed holding spike or fixture for a removable holding spike comprising means (36) to optically differentiate the holding spike from the remaining holding spikes.