diff --git a/timesheet/inc/class.timesheet_ui.inc.php b/timesheet/inc/class.timesheet_ui.inc.php
index 05a42cb33e..551e720812 100644
--- a/timesheet/inc/class.timesheet_ui.inc.php
+++ b/timesheet/inc/class.timesheet_ui.inc.php
@@ -454,7 +454,7 @@ class timesheet_ui extends timesheet_bo
 			$GLOBALS['egw_info']['flags']['app_header'] .= ': '.$GLOBALS['egw']->common->grab_owner_name($query['col_filter']['ts_owner']);
 			#if ($GLOBALS['egw']->accounts->get_type($query['col_filter']['ts_owner']) == 'g') $GLOBALS['egw_info']['flags']['app_header'] .= ' '. lang("and its members");
 			#_debug_array($GLOBALS['egw']->accounts->members($query['col_filter']['ts_owner'],true));
-			$query['col_filter']['ts_owner'] = array_merge(array($query['col_filter']['ts_owner']),$GLOBALS['egw']->accounts->members($query['col_filter']['ts_owner'],true));
+			if ($query['col_filter']['ts_owner']<0) $query['col_filter']['ts_owner'] = array_merge(array($query['col_filter']['ts_owner']),$GLOBALS['egw']->accounts->members($query['col_filter']['ts_owner'],true));
 		}
 		else
 		{