diff --git a/tmpl/sunstone-server.conf b/tmpl/sunstone-server.conf
index 880c1ee..afb2dbe 100644
--- a/tmpl/sunstone-server.conf
+++ b/tmpl/sunstone-server.conf
@@ -65,10 +65,10 @@
 #   driver defined for the user
 #
 #:auth: sunstone
-%if %%getVar('sunstone_auth_modes', None)
-:auth: sunstone
-%else
+%if %%getVar('sunstone_auth_modes', 'sunstone') == 'ldap'
 :auth: opennebula
+%else
+:auth: sunstone
 %end if
 
 # Authentication driver to communicate with OpenNebula core