diff --git a/doc/reference.conf b/doc/reference.conf
index 5c9bd0b5..3526c739 100644
--- a/doc/reference.conf
+++ b/doc/reference.conf
@@ -61,6 +61,7 @@
  * Realname (gecos) bans (+b $r:mask)                -- extb_realname
  * Server bans (+b $s:mask)                          -- extb_server
  * SSL bans (+b $z)                                  -- extb_ssl
+ * User mode bans (+b $u:modes)                      -- extb_usermode
  * Helpops system (umode +H)                         -- helpops
  * HURT system                                       -- hurt
  * New host mangling (umode +x)                      -- ip_cloaking_4.0