diff --git a/src/ac/ac.default.conf b/src/ac/ac.default.conf
index d9f6bdfd..95173e84 100644
--- a/src/ac/ac.default.conf
+++ b/src/ac/ac.default.conf
@@ -199,6 +199,7 @@
 # dbg += elem     	# CAPWAP message elements
 # dbg += elem_err	# Errors in message elements
 # dbg += elem_dmp  	# Print hex dump for capwap messages elements
+# dbg += subelem	# Priont details about sub-elements
 # dbg += rfc          	# Show warnings if CAPWAP messages don't conform to RFC
 # dbg += pkt_in		# CAPWAP packets received
 # dbg += pkt_out	# CAPWAP packets sent