An automatic dishwashing composition is provided including a builder; a phosphonate; a nonionic surfactant; and a dispersant polymer, comprising: structural units of formula I




wherein each R1 is independently selected from a hydrogen and a —C(O)CH3 group; and structural units of formula II





wherein each R2 is independently selected from a hydrogen and a —CH3 group; and wherein the automatic dishwashing composition contains ≤0.1 wt % of dispersant polymer having a lactone end group and wherein the dispersant polymer has a weight average molecular weight of 1,500 to 10,000 Daltons.