diff --git a/lib/dns/include/dns/events.h b/lib/dns/include/dns/events.h
index 04d0cd8fbd..f56dcbfd53 100644
--- a/lib/dns/include/dns/events.h
+++ b/lib/dns/include/dns/events.h
@@ -40,6 +40,7 @@ ISC_LANG_BEGINDECLS
 #define DNS_EVENT_UPDATE			(ISC_EVENTCLASS_DNS + 10)
 #define DNS_EVENT_UPDATEDONE			(ISC_EVENTCLASS_DNS + 11)
 #define DNS_EVENT_ADBCANCELED			(ISC_EVENTCLASS_DNS + 12)
+#define DNS_EVENT_ADBNAMEDELETED		(ISC_EVENTCLASS_DNS + 13)
 
 #define DNS_EVENT_FIRSTEVENT			(ISC_EVENTCLASS_DNS + 0)
 #define DNS_EVENT_LASTEVENT			(ISC_EVENTCLASS_DNS + 65535)