diff --git a/xCAT-server-2.0/sbin/copycerts b/xCAT-server-2.0/sbin/copycerts
index a115281a0..1ad0b6dda 100644
--- a/xCAT-server-2.0/sbin/copycerts
+++ b/xCAT-server-2.0/sbin/copycerts
@@ -52,6 +52,7 @@ sub copyCertstoSN
 {
     my $rc = 0;
     `touch /etc/xCATSN`;
+    `touch /tmp/lissatestxxx`;
     `unalias cp`;
     if (-d "/xcatpost/.xcat")
     {