diff --git a/calendar/inc/class.calendar_hooks.inc.php b/calendar/inc/class.calendar_hooks.inc.php
index ed20d3d8d7..c69d6eb3fc 100644
--- a/calendar/inc/class.calendar_hooks.inc.php
+++ b/calendar/inc/class.calendar_hooks.inc.php
@@ -292,7 +292,7 @@ class calendar_hooks
 				'type'   => 'select',
 				'label'  => 'weekday starts on',
 				'name'   => 'weekdaystarts',
-				'values' => 'Monday',
+				'values' => $weekdaystarts,
 				'help'   => 'This day is shown as first day in the week or month view.',
 				'xmlrpc' => True,
 				'admin'  => False,