diff --git a/admin_manual/configuration/auth_ldap.rst b/admin_manual/configuration/auth_ldap.rst
index 217faf728..580266cd8 100644
--- a/admin_manual/configuration/auth_ldap.rst
+++ b/admin_manual/configuration/auth_ldap.rst
@@ -395,6 +395,7 @@ Microsoft Active Directory
 
 In case you want to connect to a Windows AD, you must change some values in the Advanced tab.
 
+* The default login filter will not work with AD. Use “samaccountname=%uid” instead.
 * The default in User Display Name Field will not work with Active Directory.
 * The Group Member association must be set to “member (AD)”
 * Check Case insensitive LDAP server (Windows)