diff --git a/xCAT-test/xcattest b/xCAT-test/xcattest
index 9e40a7244..e9b74f393 100755
--- a/xCAT-test/xcattest
+++ b/xCAT-test/xcattest
@@ -576,7 +576,9 @@ sub trim
 {
    my $str = shift @_;
    if($str){
+       $str =~ s/\#/__wellnumber__/g;
        $str =~ s/^\s+|#.+|\s+$//g;
+       $str =~ s/__wellnumber__/#/g;
    }
    return $str;
 }