diff --git a/config.py.example b/config.py.example
index 181aed80df8292e0b7ca85efbeaed493548475d2..4a854587cc4766e5edff21f73182c483f7411eff 100644
--- a/config.py.example
+++ b/config.py.example
@@ -62,6 +62,7 @@ SESSION_PROTECTION = "strong" # do not change
 # authentication
 SECURITY_KEY = "some other random string" # change this
 AUTH_MAX_DURATION = 300
+from auth import LdapManager, ADManager
 AUTH_BACKENDS = [
     LdapManager(
         host="ldap.example.com",