diff --git a/frontend/src/pages/ProjectMemberManage.tsx b/frontend/src/pages/ProjectMemberManage.tsx
index 2ad257d..3eac4b0 100644
--- a/frontend/src/pages/ProjectMemberManage.tsx
+++ b/frontend/src/pages/ProjectMemberManage.tsx
@@ -75,7 +75,7 @@ export default function ProjectMemberManage() {
         updatePrivilege.mutate({
           projectId: Number(projectId),
           memberId,
-          privilegeData: { memberId, privilegeType: role },
+          privilegeType: role, // 수정: privilegeData 대신 privilegeType만 전달
         });
       } else {
         addProjectMember.mutate({