diff --git a/src/ac/ac.default.conf b/src/ac/ac.default.conf
index 91cdcc58..d9f6bdfd 100644
--- a/src/ac/ac.default.conf
+++ b/src/ac/ac.default.conf
@@ -197,6 +197,7 @@
 # dbg += msg_out	# Outgoing CAPWAP messages
 # dbg += msg_err      	# Be verbose about capwap message errors like re-transmission
 # dbg += elem     	# CAPWAP message elements
+# dbg += elem_err	# Errors in message elements
 # dbg += elem_dmp  	# Print hex dump for capwap messages elements
 # dbg += rfc          	# Show warnings if CAPWAP messages don't conform to RFC
 # dbg += pkt_in		# CAPWAP packets received