diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 9d5393cd..0b9219f2 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -420,7 +420,10 @@ public class MpMasterService extends Service {
                 ex.printStackTrace();
             }
 
-            if (mPreviousMpHbTime <= ts && ts - mPreviousMpHbTime > mMpHeartbeatDuration * 2) {
+            long tempduration = mMpHeartbeatDuration;
+            if(mMpHeartbeatDuration < 600000)
+                tempduration = 300000;
+            if (mPreviousMpHbTime <= ts && ts - mPreviousMpHbTime > tempduration * 2) {
                 // MpApp is not running
                 if (ts - mTimeToStartMpApp >= 1800000) {
                     MicroPhotoContext.restartMpApp(context, "MpMST Keep Alive Detection");