diff --git a/doc/authentication.md b/doc/authentication.md
index 13a821441..b196d9e0d 100644
--- a/doc/authentication.md
+++ b/doc/authentication.md
@@ -87,8 +87,8 @@ Directive               | Description
 **Example:**
 
 ```
-[auth_ad]
-backend  = ad
+[auth_db]
+backend  = db
 resource = icingaweb-mysql
 ```