Arguably, not only justice in acquisition but also justice in transfer should be guided by a proviso to leave “enough and as good” for others; for instance, to counter the problems with the limits to growth. This chapter examines whether market exchanges that violate an adapted Lockean proviso should be considered unjust. It argues that insofar as one wants to establish a Lockean proviso in the domain of commutative justice, it is equivalent to other conditions treated elsewhere in the book. That is, some market exchanges might violate a properly constructed Lockean proviso on exchange. But even if they do, this does not mean we have to incorporate additional conditions of commutative justice in order to deal with these cases. Such violations are not independent reasons of injustice.