diff --git a/kamailio/defs.cfg b/kamailio/defs.cfg
index d57ba4f..003951b 100644
--- a/kamailio/defs.cfg
+++ b/kamailio/defs.cfg
@@ -87,6 +87,10 @@ kazoo.to_external_no_response_timer = INTERNAL_TO_EXTERNAL_NO_RESPONSE_TIMER des
 
 #!trydef KZ_PERMISSIONS_CACHE 0
 
+#!ifndef WITH_NO_AUTH_TOKEN
+#!trydef WITH_AUTH_TOKEN
+#!endif
+
 #!endif
 
 # vim: tabstop=4 softtabstop=4 shiftwidth=4 expandtab