diff --git a/xCAT/postscripts/routeop b/xCAT/postscripts/routeop
index f5687f6d0..4e5501592 100755
--- a/xCAT/postscripts/routeop
+++ b/xCAT/postscripts/routeop
@@ -23,10 +23,11 @@
 #=cut
 #-------------------------------------------------------------------------------
 
-
 if [ "$(uname -s|tr 'A-Z' 'a-z')" = "linux" ];then
    str_dir_name=`dirname $0`
-   . $str_dir_name/xcatlib.sh
+   ([ -f $str_dir_name/xcatlib.sh ] && . $str_dir_name/xcatlib.sh) || \
+   ([ -f /install/postscripts/xcatlib.sh ] && . /install/postscripts/xcatlib.sh) || \
+   ([ -f /xcatpost/xcatlib.sh ] && . /xcatpost/xcatlib.sh)
 fi
 
 op=$1