Although violent organizations often use terrorism as a means to achieve political aims, recent studies suggest the tactic is ineffective because it fails to help groups gain concessions. While focused exclusively on concessions, these studies overlook other important markers of success, specifically whether groups are invited to participate in negotiations as a result of their use of terrorism. Extant studies also conduct statistical analyses on overly aggregated data, masking any effect terrorism has on important bargaining outcomes. Using new monthly data on the incidence of negotiations and the number of concessions offered to groups involved in African civil wars, this paper demonstrates that rebel groups are both more likely to be granted the opportunity to participate in negotiations and offered more concessions when they execute a greater number of terror attacks during civil wars.