In a sample of 334 R.O.K Air Force fighter pilots, this study examined a mediated moderation model in which devil’s advocate moderated the relationship between leader openness and subordinate voice intention, and this moderating effect was mediated by psychological safety. Findings revealed that subordinate voice intention was positively related to leader openness. In addition, devil’s advocate moderated the relationship between leader openness and subordinate voice intention. Specifically, subordinate voice intention was significantly increased in low leader openness condition with presence of devil’s advocate, and this effect was mediated through psychological safety. The authors discuss the implications for these finding.