diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 9de2f634..ef6f26eb 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -435,7 +435,10 @@ public class MpMasterService extends Service {
                 FilesUtils.closeFriendly(runningFile);
             }
 
-            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) { // 30 minutes 30 * 60 * 1000
                     MicroPhotoContext.restartMpApp(context, "MpMST Keep Alive Detection");