diff --git a/perl-xCAT-2.0/xCAT/PPCscan.pm b/perl-xCAT-2.0/xCAT/PPCscan.pm
index 58de16336..0fe9b7335 100644
--- a/perl-xCAT-2.0/xCAT/PPCscan.pm
+++ b/perl-xCAT-2.0/xCAT/PPCscan.pm
@@ -5,7 +5,9 @@ use strict;
 use Getopt::Long;
 use Socket;
 use XML::Simple;
-$XML::Simple::PREFERRED_PARSER='XML::Parser';
+if ($^O =~ /^linux/i) {
+	$XML::Simple::PREFERRED_PARSER='XML::Parser';
+}
 use xCAT::PPCcli qw(SUCCESS EXPECT_ERROR RC_ERROR NR_ERROR);
 use xCAT::PPCdb;
 use xCAT::GlobalDef;