diff --git a/perl-xCAT/xCAT/InstUtils.pm b/perl-xCAT/xCAT/InstUtils.pm
index 8e3f8b8c2..fcad5c651 100755
--- a/perl-xCAT/xCAT/InstUtils.pm
+++ b/perl-xCAT/xCAT/InstUtils.pm
@@ -759,7 +759,7 @@ sub get_server_nodes
         {
             #  get ip facing node
             my @servd= xCAT::NetworkUtils->my_ip_facing($node);
-            unless (@servd[0]) { $serv = $servd[1];}
+            unless ($servd[0]) { $serv = $servd[1];}
         }
 		chomp $serv;