diff --git a/config/filter.d/sshd.conf b/config/filter.d/sshd.conf
index 642f2bf7..2993b30f 100644
--- a/config/filter.d/sshd.conf
+++ b/config/filter.d/sshd.conf
@@ -32,6 +32,7 @@ failregex = ^%(__prefix_line)s(?:error: PAM: )?Authentication failure for .* fro
             ^%(__prefix_line)sauthentication failure; logname=\S* uid=\S* euid=\S* tty=\S* ruser=\S* rhost=<HOST>(?:\s+user=.*)?\s*$
             ^%(__prefix_line)srefused connect from \S+ \(<HOST>\)\s*$
             ^%(__prefix_line)sAddress <HOST> .* POSSIBLE BREAK-IN ATTEMPT\s*$
+            ^%(__prefix_line)sUser \S+ from <HOST> not allowed because none of user's groups are listed in AllowGroups$
 
 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.