In their recent ANZJP paper, Dullur and Starcevic (2018) argue that Internet gaming disorder (IGD) should not qualify as a mental disorder. They base this view on several arguments, including the notion that IGD does not fit the concept of a mental disorder, that IGD would pathologise normal gaming, that the addiction model for gaming is misleading and that a diagnosis is not necessary for treatment purposes. In this paper, we provide a critical appraisal of the authors’ points. While there are some aspects of their arguments which we support, there are many with which we disagree. We believe their views would be relevant to other behavioural addictions and would serve to undermine their validity, including with respect to gambling disorder.