Nomenclature of enzymes involved in synthesis of glutamine
Probably a mistake in your notes, or in the lecture notes for the class, but not a very important error in either case aside from the confusion it has caused you.

See the wikipedia article on Synthase and on wikipedia article on Ligase for a note on the terminology: historically synthetases use ATP, synthases do not, but this terminology is not adhered to strictly, and the current standard is that the terms are essentially synonymous; in my experience, however, a particular nomenclature dominates the literature even if the synonym is technically correct.