This study investigated the interaction between self-efficacy and implicit beliefs of ability in their association with maladaptive learning in mathematics. The analysis was based on a large sample of 2538 Singapore Secondary 2 students (M[subscript age] = 13.75), who took measures of entity beliefs of ability, self-efficacy, and three maladaptive learning variables in mathematics: novelty avoidance, cheating, and anxiety. We conducted latent interaction analysis with gender and previous mathematics achievement controlled and found that higher self-efficacy did not buffer, but enhanced the positive association between entity beliefs of ability and the three maladaptive learning variables. When entity beliefs of ability were higher, the increase in the three maladaptive learning was larger for those with higher self-efficacy than those with lower self-efficacy. Findings suggest a revision of the moderation hypothesis in the literature: higher self-efficacy is more helpful in preventing maladaptive learning for incremental theorists than for entity theorists.