Despite all the attention given to Kant's universalizability tests, one crucial aspect of Kant's thought is often overlooked. Attention to this issue, I will argue, helps us resolve two serious problems for Kant's ethics. Put briefly, the first problem is this: Kant, despite his stated intent to the contrary, doesn't seem to use universalization in arguing for duties to oneself, and, anyway, it is not at all clear why duties to oneself, should be grounded on a procedure that envisions a world in which everyone wills the contrary of those duties.