diff --git a/include/staff/slaplan.inc.php b/include/staff/slaplan.inc.php
index 0f0e7b5425cfa3b9712095d51eedffc579e9e159..0aac8b778005cc61644f57f39fe77e4d07fcee7c 100644
--- a/include/staff/slaplan.inc.php
+++ b/include/staff/slaplan.inc.php
@@ -15,7 +15,7 @@ if($sla && $_REQUEST['a']!='add'){
     $submit_text='Add Plan';
     $info['isactive']=isset($info['isactive'])?$info['isactive']:1;
     $info['enable_priority_escalation']=isset($info['enable_priority_escalation'])?$info['enable_priority_escalation']:1;
-    $info['disable_overdue_alerts']=isset($info['disable_overdue_alerts'])?$info['disable_overdue_alerts']:1;
+    $info['disable_overdue_alerts']=isset($info['disable_overdue_alerts'])?$info['disable_overdue_alerts']:0;
     $qstr.='&a='.urlencode($_REQUEST['a']);
 }
 $info=Format::htmlchars(($errors && $_POST)?$_POST:$info);