diff --git a/xCAT/xCAT.spec b/xCAT/xCAT.spec
index 96717869a..8c252f886 100644
--- a/xCAT/xCAT.spec
+++ b/xCAT/xCAT.spec
@@ -122,8 +122,9 @@ fi
 chkconfig vsftpd on
 /etc/init.d/vsftpd start
 # remove any service node file
+if [ -f /etc/xCATSN ]; then
  rm  /etc/xCATSN
-
+fi
 if [ "$1" = "1" ]; then #Only if installing for the first time..
     mkdir -p /root/.ssh
     chmod 700 /root/.ssh