diff --git a/agent/src/com/cloud/agent/resource/computing/KVMHAChecker.java b/agent/src/com/cloud/agent/resource/computing/KVMHAChecker.java
index 60bdeacd2d6..da761f8c760 100644
--- a/agent/src/com/cloud/agent/resource/computing/KVMHAChecker.java
+++ b/agent/src/com/cloud/agent/resource/computing/KVMHAChecker.java
@@ -49,7 +49,7 @@ public class KVMHAChecker extends KVMHABase implements Callable<Boolean> {
 			cmd.add("-h", _hostIP);
 			cmd.add("-r");
 			cmd.add("-t",
-					String.valueOf((_heartBeatUpdateFreq + _heartBeatUpdateTimeout) / 1000 * 2));
+					String.valueOf(_heartBeatUpdateFreq/1000));
 			OutputInterpreter.OneLineParser parser = new OutputInterpreter.OneLineParser();
 			String result = cmd.execute(parser);
 			s_logger.debug("pool: " + pool._poolIp);
diff --git a/scripts/vm/hypervisor/kvm/kvmheartbeat.sh b/scripts/vm/hypervisor/kvm/kvmheartbeat.sh
index 27855a85964..aadc2e47656 100755
--- a/scripts/vm/hypervisor/kvm/kvmheartbeat.sh
+++ b/scripts/vm/hypervisor/kvm/kvmheartbeat.sh
@@ -130,14 +130,14 @@ write_hbLog() {
 }
 
 check_hbLog() {
-  oldTimeStamp=$(cat $hbFile) 
-  sleep $interval &> /dev/null
-  newTimeStamp=$(cat $hbFile) 
-  if [ $newTimeStamp -gt $oldTimeStamp ]
+  now=$(date +%s)
+  hb=$(cat $hbFile)
+  diff=`expr $now - $hb`
+  if [ $diff -gt $interval ]
   then
-    return 0
+    return 1
   fi
-  return 1
+  return 0
 }
 
 if [ "$rflag" == "1" ]