diff --git a/src/utils.js b/src/utils.js
index fdf4870..3751369 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -78,6 +78,7 @@ function postError(str) {
  * @returns {boolean}
  */
 function isStaff(member) {
+  if (!member) return false;
   if (config.inboxServerPermission.length === 0) return true;
 
   return config.inboxServerPermission.some(perm => {