diff --git a/kamailio/local.cfg b/kamailio/local.cfg
index 828ba21..addef24 100644
--- a/kamailio/local.cfg
+++ b/kamailio/local.cfg
@@ -37,6 +37,7 @@
 ## CHANGE "kazoo://guest:guest@127.0.0.1:5672" TO THE AMQP URL
 ##     This should be the primary RabbitMQ server
 ##     in the zone that this server will service.
+# # #!substdef "!MY_AMQP_ZONE!local!g"
 # # #!substdef "!MY_AMQP_URL!amqp://guest:guest@127.0.0.1:5672!g"
 
 ################################################################################