diff --git a/calendar/inc/class.calendar_uiforms.inc.php b/calendar/inc/class.calendar_uiforms.inc.php
index 31e4bc8cb0..954ff3b539 100644
--- a/calendar/inc/class.calendar_uiforms.inc.php
+++ b/calendar/inc/class.calendar_uiforms.inc.php
@@ -1547,7 +1547,6 @@ class calendar_uiforms extends calendar_ui
 			'custom' => !count($this->bo->customfields),
 			'participants' => $this->accountsel->account_selection == 'none',
 			'history' => !$event['id'],
-			'alarms' => $readonlys['tabs']['alarms'],
 		);
 		if (!isset($GLOBALS['egw_info']['user']['apps']['mail']))	// no mail without mail-app
 		{