In this paper, I provide a critique of the version of mental fictionalism presented in the recent book by Adam Toon (2023). I contend that Toon’s attempt to reconcile the explanatory power of folk psychology with the denial of its substantial ontological commitments eventually fails. I point out three worries regarding Toon’s position. First, I argue that his claim that folk psychological metaphors are about behaviour – although they are untranslatable into descriptions of behaviour – looks ad hoc. As such, this claim does not protect Toon’s position from the traditional objections to behaviourism. Second, I argue that Hutto’s (2022) objection that fictionalism makes mysterious the success of folk psychology is in force and I show why Toon’s reply to this objection is unsatisfactory. Third, I point out the problems resulting from Toon’s claim that the concepts of folk psychology are internally incoherent.
