diff --git a/xCAT-server/lib/xcat/plugins/xen.pm b/xCAT-server/lib/xcat/plugins/xen.pm
index 6629f9b9f..ece4a0a08 100644
--- a/xCAT-server/lib/xcat/plugins/xen.pm
+++ b/xCAT-server/lib/xcat/plugins/xen.pm
@@ -709,7 +709,7 @@ sub process_request {
      if ($command eq "rpower" and grep(/^pduon|pduoff|pdureset|pdustat$/, @exargs)) {
          return;
      }
-     
+
     if ($command eq 'revacuate') {
         my $newnoderange;
         foreach (@$noderange) {