In his ‘Wide or narrow scope?’, John Broome argues that (i) wide- and narrow-scope requirements of rationality are equivalent in respect of the property of full rationality. Thus, (ii) the property of full rationality cannot guide us in choosing between wide- or narrow-scope formulations of conditional requirements. However, this paper takes issue with (i) and (ii). I argue that replacing a wide- with a narrow-scope requirement of rationality can alter the circumstances in which one is fully rational. I conclude that the property of rationality may guide us in deciding between wide- or narrow-scope formulations of rational requirements.