diff --git a/CHANGES b/CHANGES
index fd9ed4ae2f..47ca261d63 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2354.	[bug]		Failed to initialise sone rdatasetheader_t elements.
+			[RT #17927]
+
 2353.	[func]		Add support for Name Server ID (RFC 5001).
 			'dig +nsid' requests NSID from server.
 			'request-nsid yes;' causes recursive server to send
diff --git a/lib/dns/rbtdb.c b/lib/dns/rbtdb.c
index 9821bc4147..35d2241abe 100644
--- a/lib/dns/rbtdb.c
+++ b/lib/dns/rbtdb.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rbtdb.c,v 1.255 2008/04/02 02:37:42 marka Exp $ */
+/* $Id: rbtdb.c,v 1.256 2008/04/03 04:00:38 marka Exp $ */
 
 /*! \file */
 
@@ -5782,6 +5782,9 @@ subtractrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
 			newheader->count = 0;
 			newheader->additional_auth = NULL;
 			newheader->additional_glue = NULL;
+			newheader->node = rbtnode;
+			newheader->resign = 0;
+			newheader->last_used = 0;
 		} else {
 			free_rdataset(rbtdb, rbtdb->common.mctx, newheader);
 			goto unlock;