diff --git a/src/externalldap.js b/src/externalldap.js
index d92ef8c8a..72d28454c 100644
--- a/src/externalldap.js
+++ b/src/externalldap.js
@@ -421,7 +421,7 @@ async function syncGroupUsers(externalLdapConfig, progressCallback) {
             continue;
         }
 
-        let ldapGroupMembers = found.member || found.uniqueMember || [];
+        let ldapGroupMembers = found.member || found.uniquemember || [];
 
         // if only one entry is in the group ldap returns a string, not an array!
         if (typeof ldapGroupMembers === 'string') ldapGroupMembers = [ ldapGroupMembers ];