The News story ‘Marmosets are stars of Japan’s ambitious brain project’ (Nature 514, 151–152; 2014) misspelled Afonso Silva’s name. And the Toolbox story ‘Scientific writing: the online cooperative’ (Nature 514, 127–128; 2014) should have noted that although Fidus Writer does not record the detailed history of every single edit, users can save time-stamped versions.