diff --git a/src/main/java/com/eactive/eai/common/monitor/MonitorVO.java b/src/main/java/com/eactive/eai/common/monitor/MonitorVO.java
index b5fb025..5c830c8 100644
--- a/src/main/java/com/eactive/eai/common/monitor/MonitorVO.java
+++ b/src/main/java/com/eactive/eai/common/monitor/MonitorVO.java
@@ -1014,7 +1014,11 @@ public class MonitorVO implements Serializable
     **/
     synchronized private void countM02(String logSeq, long msgPssTm, long msgRcvTm,  int iErrorCode){
         if(iErrorCode == 0){
-            long psstmp = Long.parseLong((this.pssCnt.get(logSeq).toString()));    
+            Object o = this.pssCnt.get(logSeq);
+            long psstmp = 0;
+            if( o != null ) {
+        	psstmp = Long.parseLong((this.pssCnt.get(logSeq).toString()));
+            }
             long psstmpIn = Long.parseLong((this.pssCntInPeriod.get(logSeq).toString()));
             psstmp++;
             psstmpIn++;