diff --git a/xCAT-server/lib/xcat/monitoring/monitorctrl.pm b/xCAT-server/lib/xcat/monitoring/monitorctrl.pm
index 71d4e5444..c565eae72 100644
--- a/xCAT-server/lib/xcat/monitoring/monitorctrl.pm
+++ b/xCAT-server/lib/xcat/monitoring/monitorctrl.pm
@@ -966,10 +966,10 @@ sub getMonHierarchy {
 
       my $row3=$temp_hash3{$node};
       my $nodetype=""; #default
-      #if (defined($row3) && ($row3)) {
-      #  if ($row3->{nodetype}) { $nodetype=$row3->{nodetype}; }
-      #}
-      $nodetype=xCAT::DBobjUtils->getnodetype($node);
+      if (defined($row3) && ($row3)) {
+        if ($row3->{nodetype}) { $nodetype=$row3->{nodetype}; }
+      }
+      #$nodetype=xCAT::DBobjUtils->getnodetype($node);
 
       my $monserver;
       my $monmaster;
@@ -1068,10 +1068,10 @@ sub getMonServerWithInfo {
     my $tmp3= $tabdata->{$node}->[0];
 
     my $nodetype=""; #default
-    #if (defined($tmp3) && ($tmp3)) {
-    #  if ($tmp3->{nodetype}) { $nodetype=$tmp3->{nodetype}; }
-    #}
-    $nodetype=xCAT::DBobjUtils->getnodetype($node);
+    if (defined($tmp3) && ($tmp3)) {
+      if ($tmp3->{nodetype}) { $nodetype=$tmp3->{nodetype}; }
+    }
+    #$nodetype=xCAT::DBobjUtils->getnodetype($node);
 
     my $pairs=$pPairHash->{$node};
 
@@ -1139,10 +1139,10 @@ sub getMonServer {
 
       my $tmp3=$tabdata3->{$node}->[0];
       my $nodetype=""; #default
-      #if (defined($tmp3) && ($tmp3)) {
-      # if ($tmp3->{nodetype}) { $nodetype=$tmp3->{nodetype}; }
-      #}
-      $nodetype=xCAT::DBobjUtils->getnodetype($node);
+      if (defined($tmp3) && ($tmp3)) {
+	if ($tmp3->{nodetype}) { $nodetype=$tmp3->{nodetype}; }
+      }
+      #$nodetype=xCAT::DBobjUtils->getnodetype($node);
 
       my $pairs=$pPairHash->{$node};