diff --git a/CHANGES b/CHANGES
index 1ecb87cf49..2c0969c74a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+2587.	[func]		Improve logging by reporting serial numbers for
+			when zone serial has gone backwards or unchanged.
+			[RT #19506]
+
 2586.	[bug]		Missing cleanup of SIG rdataset in searching a DLZ DB
 			or SDB. [RT #19577]
 
diff --git a/lib/dns/zone.c b/lib/dns/zone.c
index f8f44939fc..78e2f3ac13 100644
--- a/lib/dns/zone.c
+++ b/lib/dns/zone.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: zone.c,v 1.489 2009/03/26 22:51:54 marka Exp $ */
+/* $Id: zone.c,v 1.490 2009/04/28 12:48:34 jreed Exp $ */
 
 /*! \file */
 
@@ -2562,12 +2562,13 @@ zone_postload(dns_zone_t *zone, dns_db_t *db, isc_time_t loadtime,
 				goto cleanup;
 			} else if (!isc_serial_ge(serial, zone->serial))
 				dns_zone_log(zone, ISC_LOG_ERROR,
-					     "zone serial has gone backwards");
+					     "zone serial (%u/%u) has gone "
+				 	     "backwards", serial, zone->serial);
 			else if (serial == zone->serial && !hasinclude)
 				dns_zone_log(zone, ISC_LOG_ERROR,
-					     "zone serial unchanged. "
+					     "zone serial (%u) unchanged. "
 					     "zone may fail to transfer "
-					     "to slaves.");
+					     "to slaves.", serial);
 		}
 
 		if (zone->type == dns_zone_master &&