Oral Corrective Feedback is a widely used teaching strategy that has been found to help language acquisition. The factors that contribute to its effectiveness, however, remain elusive. In this study, the role of smiling during teachers' OCF provision is investigated in intact language classrooms by modifying the analytical framework developed by Lyster and Ranta (Stud Second Lang Acquis, 19(1):37-66, 1997), which determines OCF effectiveness by the success of the learner uptake. In addition to the feedback strategies used, this study examines teacher smiling during the feedback instances, and whether they were genuine or polite smiles.