diff --git a/perl-xCAT/xCAT/TableUtils.pm b/perl-xCAT/xCAT/TableUtils.pm
index c56b18093..bb1903f19 100644
--- a/perl-xCAT/xCAT/TableUtils.pm
+++ b/perl-xCAT/xCAT/TableUtils.pm
@@ -17,6 +17,7 @@ if ($^O =~ /^aix/i) {
 }
 
 use lib "$::XCATROOT/lib/perl";
+use strict;
 #-----------------------------------------------------------------------
 
 =head3