diff --git a/xCAT-server/lib/xcat/plugins/packimage.pm b/xCAT-server/lib/xcat/plugins/packimage.pm
index fa450e7c9..f12bda2cf 100755
--- a/xCAT-server/lib/xcat/plugins/packimage.pm
+++ b/xCAT-server/lib/xcat/plugins/packimage.pm
@@ -629,6 +629,7 @@ sub copybootscript {
 
         copy("$installroot/postscripts/xcatdsklspost", "$rootimg_dir/opt/xcat/xcatdsklspost");
         if ($timezone[0]) {
+            unlink("$rootimg_dir/etc/localtime");
             copy("$rootimg_dir/usr/share/zoneinfo/$timezone[0]", "$rootimg_dir/etc/localtime");
         }