diff --git a/xCAT-server/lib/perl/xCAT/Template.pm b/xCAT-server/lib/perl/xCAT/Template.pm
index de7c814ac..c94e49548 100644
--- a/xCAT-server/lib/perl/xCAT/Template.pm
+++ b/xCAT-server/lib/perl/xCAT/Template.pm
@@ -1095,8 +1095,9 @@ sub subvars_for_mypostscript {
   foreach $line ( @lines ) {
       if( $line =~ /^([^#]+)=[\s]*$/ ) {
          my $key=$1; 
-          $inc  =~  s/$key=([\s\n]+)//g;
-          $inc  =~  s/export $key//g;
+          $inc  =~  s/$key=([\s\n]+)/$key=''\n/g;
+          #$inc  =~  s/$key=([\s\n]+)//g;
+          #$inc  =~  s/export $key//g;
       } 
   }