The present study investigated the applicability of Terror Management Theory (TMT) to scrupulosity using a sample of nonclinical college students (N=92). More specifically, we examined whether scrupulosity potentiated the relationship between exposure to conscious reminders of death (i.e., mortality salience) and four variables of interest (mistake-checking behavior, “not just right experience,” shame, and guilt). Results were that individuals engaged in significantly greater mistake-checking behavior, as well as experienced significantly heightened “not just right experience,” shame, and guilt in response to the mistake-checking task, following mortality salience at higher versus lower levels of scrupulosity. These patterns of relations were not found in a control condition. Finally, a “not just right experience,” but not shame or guilt, mediated the potentiating effect of scrupulosity in relation to the increased mistake-checking behavior following mortality salience. Implications of these results for improving our conceptualization and treatment of scrupulosity are discussed.