diff --git a/include/ctype.h b/include/ctype.h
index 5be77c427018..893daebabe08 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: ctype.h,v 1.24 2003/08/07 09:44:09 agc Exp $	*/
+/*	$NetBSD: ctype.h,v 1.25 2003/10/22 15:51:18 kleink Exp $	*/
 
 /*
  * Copyright (c) 1989 The Regents of the University of California.
@@ -78,7 +78,7 @@ int	_tolower __P ((int));
 int	_toupper __P ((int));
 #endif
 
-#if defined(_ISO_C99_SOURCE) || (_POSIX_C_SOURCE - 0) > 200112L || \
+#if defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) > 200112L || \
     (_XOPEN_SOURCE - 0) > 600 || defined(_NETBSD_SOURCE)
 int	isblank __P ((int));
 #endif
diff --git a/sys/sys/featuretest.h b/sys/sys/featuretest.h
index 391823a9e1c8..f564a038999e 100644
--- a/sys/sys/featuretest.h
+++ b/sys/sys/featuretest.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: featuretest.h,v 1.5 2003/04/29 12:50:16 bjh21 Exp $	*/
+/*	$NetBSD: featuretest.h,v 1.6 2003/10/22 15:52:07 kleink Exp $	*/
 
 /*
  * Written by Klaus Klein <kleink@NetBSD.ORG>, February 2, 1998.
@@ -53,7 +53,7 @@
  * are:
  *
  * _REENTRANT
- * _ISO_C99_SOURCE
+ * _ISOC99_SOURCE
  * _LARGEFILE_SOURCE		Large File Support
  *		<http://ftp.sas.com/standards/large.file/x_open.20Mar96.html>
  */