diff --git a/program/lib/Roundcube/rcube_ldap.php b/program/lib/Roundcube/rcube_ldap.php
index c1ec5f95b14..cee84f8b3ca 100644
--- a/program/lib/Roundcube/rcube_ldap.php
+++ b/program/lib/Roundcube/rcube_ldap.php
@@ -1631,7 +1631,7 @@ private function _ldap2result($rec)
             if (!empty($this->group_data['name_attr'])) {
                 $fieldmap['name'] = $this->group_data['name_attr'];
             }
-            else {
+            else if (!empty($this->prop['groups']['name_attr'])) {
                 $fieldmap['name'] = $this->prop['groups']['name_attr'];
             }
         }