diff --git a/lib/dns/include/dns/result.h b/lib/dns/include/dns/result.h
index 706316897b..91452f90e4 100644
--- a/lib/dns/include/dns/result.h
+++ b/lib/dns/include/dns/result.h
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: result.h,v 1.59 2000/06/22 21:56:07 tale Exp $ */
+/* $Id: result.h,v 1.60 2000/07/04 03:59:53 marka Exp $ */
 
 #ifndef DNS_RESULT_H
 #define DNS_RESULT_H 1
@@ -51,7 +51,7 @@
 #define DNS_R_EXTRATOKEN		(ISC_RESULTCLASS_DNS + 12)
 #define DNS_R_EXTRADATA			(ISC_RESULTCLASS_DNS + 13)
 #define DNS_R_TEXTTOOLONG		(ISC_RESULTCLASS_DNS + 14)
-/* 15 is unused */
+#define DNS_R_NOTZONETOP		(ISC_RESULTCLASS_DNS + 15)
 #define DNS_R_SYNTAX			(ISC_RESULTCLASS_DNS + 16)
 #define DNS_R_BADCKSUM			(ISC_RESULTCLASS_DNS + 17)
 #define DNS_R_BADAAAA			(ISC_RESULTCLASS_DNS + 18)
diff --git a/lib/dns/result.c b/lib/dns/result.c
index 7a80dcc133..6a9d9d6fc1 100644
--- a/lib/dns/result.c
+++ b/lib/dns/result.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: result.c,v 1.63 2000/06/22 21:54:47 tale Exp $ */
+/* $Id: result.c,v 1.64 2000/07/04 03:59:51 marka Exp $ */
 
 #include <config.h>
 
@@ -41,7 +41,7 @@ static const char *text[DNS_R_NRESULTS] = {
 	"extra input text",			/* 12 */
 	"extra input data",			/* 13 */
 	"text too long",			/* 14 */
-	"UNUSED15",				/* 15 */
+	"not at top of zone",			/* 15 */
 	"syntax error",				/* 16 */
 	"bad checksum",				/* 17 */
 	"bad IPv6 address",			/* 18 */
diff --git a/lib/tests/t_api.c b/lib/tests/t_api.c
index 200e9cb81e..95a3aa798e 100644
--- a/lib/tests/t_api.c
+++ b/lib/tests/t_api.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: t_api.c,v 1.39 2000/06/22 22:00:21 tale Exp $ */
+/* $Id: t_api.c,v 1.40 2000/07/04 03:59:54 marka Exp $ */
 
 #include <config.h>
 
@@ -620,6 +620,7 @@ struct dns_errormap {
 	{ DNS_R_NXRRSET,		"DNS_R_NXRRSET"		},
 	{ DNS_R_BADDB,			"DNS_R_BADDB"		},
 	{ DNS_R_ZONECUT,		"DNS_R_ZONECUT"		},
+	{ DNS_R_NOTZONETOP,		"DNS_R_NOTZONETOP"	},
 	{ (isc_result_t)0, NULL }
 };