Derived from engineering, adherence to planning (ATP) is the central and most often used criterion for the evaluation of information system (IS) projects. Although this evaluation is questionable, as ATP does not account for all of IS projects’ particularities, a systematic evaluation of ATP’s suitability in the context of IS projects is still missing. As a first step to close this gap, we use aggregations of the project life cycle’s processes and conduct a systematic literature review to identify research dealing with these aggregations. Our results show that ATP’s suitability depends on an IS project’s context, and is not given or at least questionable in many cases. Researchers and managers should adapt the way of evaluating IS projects to avoid misleading implications.