diff --git a/ztpserver/ztpserver.conf b/ztpserver/ztpserver.conf
index 97366bd441073a9baafb6d71d394c2fc2541c18f..88457c133248276e91eb3a6a3963a80c163485d0 100644
--- a/ztpserver/ztpserver.conf
+++ b/ztpserver/ztpserver.conf
@@ -6,7 +6,7 @@ data_root=/ztp-root
 
 # UID used in the /nodes structure
 # default=serialnum
-#identifier=<serialnum | systemmac>
+identifier=systemmac
 
 # Server URL to-be-advertised to clients (via POST replies) during the bootstrap process
 # default=http://ztpserver:8080