Within the framework of this article, we will be addressing the question of the actuarial shift that occurred in the field of corrections, particularly with regard to the multiplication of actuarial risk assessment tools, which are at the disposal of correctional professionals. The objectives of this article are threefold. Firstly, we describe the extent and the nature of the transformations that took place during the last two decades with regard to the tools used by Canadian correctional professionals. Thereafter, in our conceptual and theoretical framework, we outline the principal issues of these technical transformations, particularly with regard to the reduction of discretionary power granted to these professionals. Finally, we analyze the discourse of these professionals in an effort to further evaluate how the professionals themselves received the impact of those modifications.