Nat. Neurosci. 12, 387–389 (2008); published online 15 March 2009; corrected after print 15 May 2009

In the version of this article initially published, the abbreviation DLK was omitted from the abstract. The second sentence of the abstract should be “We found that dual leucine kinase (DLK) promoted degeneration of severed axons in Drosophila and mice, and that its target, c-Jun N-terminal kinase, promoted degeneration locally in axons as they committed to degenerate”. The error has been corrected in the HTML and PDF versions of the article.