An author name was incorrect in the an article published in February 2009 (G Moroni, A Radice, G Giammarresi, et al. Are laboratory tests useful for monitoring the activity of lupus nephritis? A 6-year prospective study in a cohort of 228 patients with lupus nephritis. Ann Rheum Dis 2009;68: 234–7). The seventh author’s name should have been given as M Li Vecchi, not M L Vecchi as given in the article.