diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 52be2754..fa8ca629 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -634,7 +634,7 @@ public class MpMasterService extends Service {
 
                 if (zeroPoint + closestTime * 1000 > currentTimeMs + mMpHeartbeatDuration * 60000) {
                     keepAlive = true;
-                    registerHeartbeatTimer(currentTimeMs + mMpHeartbeatDuration * 60000, keepAlive);
+                    registerHeartbeatTimer(currentTimeMs + mMpHeartbeatDuration * 60000 + 5000, keepAlive);
                 } else {
                     registerHeartbeatTimer(zeroPoint + closestTime * 1000, keepAlive);
                 }