This month's Gene Ontology Consortium (GO) release contained several errors: 'alternative id' (alt_id) GO terms appear in some species' gene association (gaf) files. These terms have been corrected in GeneMerge gene-association files to reflect the official GO Term id for each function as given in the corresponding GO obo file. This fix avoids the use of different terms for the same function which will result in a loss of statistical power when testing for over-representation. This note is only to let users know of this difference in terms between GO gaf files vs. the corresponding GM association files.