diff --git a/xCAT-server/lib/xcat/plugins/nodestat.pm b/xCAT-server/lib/xcat/plugins/nodestat.pm
index 1da35e23a..251eee230 100644
--- a/xCAT-server/lib/xcat/plugins/nodestat.pm
+++ b/xCAT-server/lib/xcat/plugins/nodestat.pm
@@ -77,7 +77,7 @@ sub preprocess_request
     my $req = shift;
     my $cb  = shift;
     my %sn;
-    if ($req->{_xcatdest}) { return [$req]; }    #exit if preprocessed
+    if ($req->{_xcatpreprocessed}->[0] == 1) { return [$req]; }
     my $nodes    = $req->{node};
     my $service  = "xcat";
     my @requests;
@@ -93,6 +93,7 @@ sub preprocess_request
             my $reqcopy = {%$req};
             $reqcopy->{node} = $sn->{$snkey};
             $reqcopy->{'_xcatdest'} = $snkey;
+            $reqcopy->{_xcatpreprocessed}->[0] = 1;
             push @requests, $reqcopy;
 
       }