diff --git a/perl-xCAT/xCAT/VMCommon.pm b/perl-xCAT/xCAT/VMCommon.pm
index 0ddd38aa9..6bb7d8d84 100644
--- a/perl-xCAT/xCAT/VMCommon.pm
+++ b/perl-xCAT/xCAT/VMCommon.pm
@@ -12,7 +12,7 @@ sub grab_table_data{ #grab table data relevent to VM guest nodes
       $cfghash->{nodehm}  = $hmtab->getNodesAttribs($noderange,['serialspeed']);
   }
   if ($nttab) {
-      $cfghash->{nodetype}  = $nttab->getNodesAttribs($noderange,['os']); #allow us to guess RTC config
+      $cfghash->{nodetype}  = $nttab->getNodesAttribs($noderange,['os','arch']); #allow us to guess RTC config
   }
   unless ($vmtab) { 
     $callback->({data=>["Cannot open vm table"]});