diff --git a/Fail2Ban-Setup.md b/Fail2Ban-Setup.md
index 843fba6..507be98 100644
--- a/Fail2Ban-Setup.md
+++ b/Fail2Ban-Setup.md
@@ -186,6 +186,10 @@ failregex = ^.*Invalid admin token\. IP: <ADDR>.*$
 ignoreregex =
 ```
 
+**Tip:** If you get the following error message in `fail2ban.log`
+`ERROR  NOK: ("No 'host' group in '^.*Invalid admin token\\. IP: <ADDR>.*$'")`  
+Please Use `<HOST>` instead of `<ADDR>` in `bitwarden_rs-admin.local`
+
 ### Jail
 
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