diff --git a/classes/models/outage.php b/classes/models/outage.php
index ebc2894..5b0b8d9 100644
--- a/classes/models/outage.php
+++ b/classes/models/outage.php
@@ -141,11 +141,13 @@ class outage {
         return str_replace(
             [
                 '{{start}}',
-                '{{stop}}'
+                '{{stop}}',
+                '{{duration}}',
             ],
             [
                 userdate($this->starttime, get_string('datetimeformat', 'auth_outage')),
                 userdate($this->stoptime, get_string('datetimeformat', 'auth_outage')),
+                format_time($this->get_duration()),
             ],
             $str
         );
diff --git a/lang/en/auth_outage.php b/lang/en/auth_outage.php
index 68a95d9..0a25870 100644
--- a/lang/en/auth_outage.php
+++ b/lang/en/auth_outage.php
@@ -33,7 +33,7 @@ $string['defaultwarningduration'] = 'Warning Duration';
 $string['defaultwarningdurationdescription'] = 'Default warning time (in minutes) for outages.';
 $string['defaultwarningtitle'] = 'Title';
 $string['defaultwarningtitledescription'] = 'Default title for outages. Use {{start}} and {{stop}} placeholders as required.';
-$string['defaultwarningtitlevalue'] = 'System down from {{start}} to {{stop}}.';
+$string['defaultwarningtitlevalue'] = 'System down from {{start}} for {{duration}}.';
 $string['defaultwarningdescription'] = 'Description';
 $string['defaultwarningdescriptiondescription'] = 'Default warning message for outages. Use {{start}} and {{stop}} placeholders as required.';
 $string['defaultwarningdescriptionvalue'] = 'There is an scheduled maintenance from {{start}} to {{stop}} and our system will not be available during that time.';