diff --git a/README.md b/README.md
index 87c3690..2140900 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@
 
 ****
 
-## Table Of Contents
+## Table of Contents
 
 - **[Contributing](#contributing)**
 - **[Other hardening guides](#other-hardening-guides)**
@@ -178,8 +178,8 @@ Before add pull request please see **[this](CONTRIBUTING.md)**.
 | <b>[STIGs Master List](https://iase.disa.mil/stigs/Pages/a-z.aspx)</b> ||
 | <b>[Arch Linux](https://wiki.archlinux.org/index.php/Security)</b> ||
 | <b>[CentOS Linux](https://wiki.centos.org/HowTos/OS_Protection)</b> ||
-| <b>[Debian GNU/Linux](https://www.debian.org/doc/manuals/securing-debian-howto/index.en.html)</b> | old guide|
-| <b>[Fedora Linux](https://docs.fedoraproject.org/en-US/Fedora/19/html/Security_Guide/index.html)</b> | old guide |
+| <b>[Debian GNU/Linux](https://www.debian.org/doc/manuals/securing-debian-howto/index.en.html)</b> | <sup>old guide - to update</sup> |
+| <b>[Fedora Linux](https://docs.fedoraproject.org/en-US/Fedora/19/html/Security_Guide/index.html)</b> | <sup>old guide - to update</sup>  |
 | <b>[Red Hat Enterprise](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/)</b> ||
-| <b>[Slackware Linux](https://docs.slackware.com/howtos:security:start)</b> | limited |
-| <b>[Ubuntu Linux](https://help.ubuntu.com/lts/serverguide/security.html.en)</b> | limited |
+| <b>[Slackware Linux](https://docs.slackware.com/howtos:security:start)</b> | <sup>ome data may not be available</sup>  |
+| <b>[Ubuntu Linux](https://help.ubuntu.com/lts/serverguide/security.html.en)</b> | <sup>some data may not be available</sup> |