Differential reinforcement of alternative behavior is a well-established treatment for problem behavior in which the functional reinforcer is delivered after the occurrence of a replacement behavior and withheld after the occurrence of problem behavior. However, sometimes problem behavior continues to occur under these conditions, raising a question as to why problem behavior might maintain when its reinforcer is withheld. This study examined the possibility that problem behavior could be maintained indirectly in a precurrent relation. A functional analysis was conducted to identify a response-response relation between self-injurious behavior (SIB) and an alternative response. The results suggest that SIB was maintained by its relation with the alternative response.