diff --git a/_Sidebar.md b/_Sidebar.md
index 52017b4..66134ff 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -6,6 +6,7 @@
 * [Test newer fail2ban version](How-to-test-newer-fail2ban-version-resp.-use-fail2ban-standalone-instance)
 * [Create standalone instance](How-to-test-newer-fail2ban-version-resp.-use-fail2ban-standalone-instance)
 * [Ban something other as host/IP, like user or e-mail](How-to-ban-something-other-as-host-(IP-address),-like-user-or-mail,-etc.)
+* [Simple Troubleshooting of Regex](Developing-Regex-in-Fail2ban)
 
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 ### FAQ