diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 34966734..1b39ad49 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -883,7 +883,7 @@ public class MpMasterService extends Service {
         relaunchIntent.setPackage("com.android.systemui");
         // getApplicationContext().sendBroadcast(restartIntent);
 
-        long launchTs = System.currentTimeMillis() + (mHeartbeatDuration + 2) * 1000;
+        long launchTs = System.currentTimeMillis() + (mHeartbeatDuration + 120) * 1000;
 
         PendingIntent sysKAPendingIntent = PendingIntent.getBroadcast(this, BROADCAST_REQUEST_CODE_SYS_KEEPALIVE, relaunchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
         alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, launchTs, sysKAPendingIntent);