diff --git a/apps/sched/sched.js b/apps/sched/sched.js
index 92a744588..012e8ed35 100644
--- a/apps/sched/sched.js
+++ b/apps/sched/sched.js
@@ -9,7 +9,7 @@ function showAlarm(alarm) {
   const settings = require("sched").getSettings();
 
   let msg = "";
-  msg += require("time_utils").formatTime(alarm.timer ? alarm.timer : alarm.t);
+  msg += alarm.timer ? require("time_utils").formatDuration(alarm.timer) : require("time_utils").formatTime(alarm.t);
   if (alarm.msg) {
     msg += "\n"+alarm.msg;
   } else {