diff --git a/plugins/kolab_auth/config.inc.php.dist b/plugins/kolab_auth/config.inc.php.dist
index 77cbe4ac..8c01d566 100644
--- a/plugins/kolab_auth/config.inc.php.dist
+++ b/plugins/kolab_auth/config.inc.php.dist
@@ -18,10 +18,10 @@ $config['kolab_auth_addressbook'] = '';
 // This will overwrite defined filter
 $config['kolab_auth_filter'] = '(&(objectClass=kolabInetOrgPerson)(|(uid=%u)(mail=%fu)(alias=%fu)))';
 
-// Use this fields (from fieldmap configuration) to get authentication ID
+// Use this field (from fieldmap configuration) to get authentication ID. Don't use an array here!
 $config['kolab_auth_login'] = 'email';
 
-// Use this fields (from fieldmap configuration) for default identity.
+// Use these fields (from fieldmap configuration) for default identity.
 // If the value array contains more than one field, first non-empty will be used
 // Note: These aren't LDAP attributes, but field names in config
 // Note: If there's more than one email address, as many identities will be created