Nontarget allies (e.g., Whites against racism) play an important role in antibias efforts. Not only can allies be uniquely effective in social justice efforts (e.g., Czopp & Monteith, 2003), some argue that both target and nontarget ally participation is necessary for effective collective action (Drury & Kaiser, 2014). Despite this, little research has addressed the types of behaviors allies engage in, what behaviors target group members desire, and what factors impact targets’ ally desires. While allies may be well intentioned, allies’ behaviors may differ from what targets’ desire (e.g., Rattan & Ambady, 2014). A contributing factor to this may be perceptions of ally motives and perceptions of ally sincerity (Major, Sawyer, & Kuntsman, 2013). Across 3 studies, the present research investigated perceptions of ally behaviors, from the perspective of both White allies’ willingness to engage in ally behaviors and Black participants’ ally behavior desires. Critically, the we explored the moderating role of Blacks’ suspicion of Whites’ motives on perceptions of ally sincerity and ally behaviors.