After publication it was brought to our attention that there is an ambiguity in the title and in the abstract of our paper [1] that could lead to incorrect understanding of the name of the studied species. To avoid this, the correct title should read “Expression of Hox genes during regeneration of nereid polychaete Alitta virens (Annelida, Lophotrochozoa)” and the sentence “We have recently described the expression of 10 out of 11 Hox genes during postlarval growth of Alitta (Nereis) virens” in the abstract should read as “We have recently described the expression of 10 out of 11 Hox genes during postlarval growth of Alitta virens (formerly Nereis virens).”