diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 3407a6b7..34966734 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -883,8 +883,12 @@ public class MpMasterService extends Service {
         relaunchIntent.setPackage("com.android.systemui");
         // getApplicationContext().sendBroadcast(restartIntent);
 
+        long launchTs = System.currentTimeMillis() + (mHeartbeatDuration + 2) * 1000;
+
         PendingIntent sysKAPendingIntent = PendingIntent.getBroadcast(this, BROADCAST_REQUEST_CODE_SYS_KEEPALIVE, relaunchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
-        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, SystemClock.elapsedRealtime() + (mHeartbeatDuration + 2) * 1000, sysKAPendingIntent);
+        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, launchTs, sysKAPendingIntent);
+
+        logger.info(String.format("Register KeepAlive Launch Clock: " + format.format(new Date(launchTs))));
     }
 
     @Override