This study investigates whether directors' and officers' liability insurance (D&O insurance) misleads creditors' lending decisions by examining its effect on corporate debt maturity structure. We find that purchasing D&O insurance leads to increased corporate debt maturity, and this effect is more pronounced for firms with weaker corporate governance. These results suggest that creditors may view D&O insurance as an external monitoring tool that helps improve corporate governance. However, D&O insurance induces higher firm risk, but cannot help decrease agency costs or improve firm performance, that is, it results in more severe managerial opportunism. Our findings suggest that D&O insurance, to some extent, misguides creditors' lending decisions.