diff --git a/bin/ksh/config.h b/bin/ksh/config.h
index 5a3949a133cc..bd89a5076ffc 100644
--- a/bin/ksh/config.h
+++ b/bin/ksh/config.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: config.h,v 1.20 2017/06/22 23:17:50 kamil Exp $	*/
+/*	$NetBSD: config.h,v 1.21 2017/06/22 23:19:53 kamil Exp $	*/
 
 /* config.h.  Generated automatically by configure.  */
 /* config.h.in.  Generated automatically from configure.in by autoheader.  */
@@ -289,9 +289,6 @@
 /* Define if you have the <paths.h> header file.  */
 #define HAVE_PATHS_H 1
 
-/* Define if you have the <stddef.h> header file.  */
-#define HAVE_STDDEF_H 1
-
 /* Define if you have the <string.h> header file.  */
 #define HAVE_STRING_H 1
 
diff --git a/bin/ksh/sh.h b/bin/ksh/sh.h
index c29b869e1f15..6b9c029526b6 100644
--- a/bin/ksh/sh.h
+++ b/bin/ksh/sh.h
@@ -1,10 +1,10 @@
-/*	$NetBSD: sh.h,v 1.14 2017/06/22 23:17:50 kamil Exp $	*/
+/*	$NetBSD: sh.h,v 1.15 2017/06/22 23:19:53 kamil Exp $	*/
 
 /*
  * Public Domain Bourne/Korn shell
  */
 
-/* $Id: sh.h,v 1.14 2017/06/22 23:17:50 kamil Exp $ */
+/* $Id: sh.h,v 1.15 2017/06/22 23:19:53 kamil Exp $ */
 
 #include "config.h"	/* system and option configuration info */
 
@@ -19,10 +19,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <setjmp.h>
-#ifdef HAVE_STDDEF_H
-# include <stddef.h>
-#endif
-
+#include <stddef.h>
 #include <stdlib.h>
 #include <unistd.h>