diff --git a/xCAT-server/lib/xcat/plugins/esx.pm b/xCAT-server/lib/xcat/plugins/esx.pm
index 305e1f648..a9eb6f98a 100644
--- a/xCAT-server/lib/xcat/plugins/esx.pm
+++ b/xCAT-server/lib/xcat/plugins/esx.pm
@@ -76,7 +76,6 @@ sub preprocess_request {
     my $vusername = "Administrator";
     my $vpassword = "";
 
-    xCAT::Common::usage_noderange($request,$callback);
     unless ($request) { return; }
 
 	if ($request->{command}->[0] eq 'copycd')
@@ -85,6 +84,7 @@ sub preprocess_request {
 	}elsif($request->{command}->[0] eq 'mknetboot'){
 		return [$request];
 	}
+    xCAT::Common::usage_noderange($request,$callback);
 
         if ($request->{_xcatpreprocessed}->[0] == 1) { return [$request]; } 
          # exit if preprocesses