diff --git a/lib/isc/rbtgen.c b/lib/isc/rbtgen.c
index a900790fd4..744eb897a9 100644
--- a/lib/isc/rbtgen.c
+++ b/lib/isc/rbtgen.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1998  Internet Software Consortium.
+ * Copyright (C) 1998, 1999  Internet Software Consortium.
  * 
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above