diff --git a/lib/libc/compat/sys/compat___semctl13.c b/lib/libc/compat/sys/compat___semctl13.c
index c3eacf9d9f29..0d2b07849973 100644
--- a/lib/libc/compat/sys/compat___semctl13.c
+++ b/lib/libc/compat/sys/compat___semctl13.c
@@ -1,6 +1,4 @@
-/*	$NetBSD: compat___semctl13.c,v 1.3 2011/01/31 22:51:39 christos Exp $	*/
-
-/*	$NetBSD: compat___semctl13.c,v 1.3 2011/01/31 22:51:39 christos Exp $ */
+/*	$NetBSD: compat___semctl13.c,v 1.4 2014/08/10 17:55:08 joerg Exp $ */
 
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -39,7 +37,7 @@
  */
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: compat___semctl13.c,v 1.3 2011/01/31 22:51:39 christos Exp $");
+__RCSID("$NetBSD: compat___semctl13.c,v 1.4 2014/08/10 17:55:08 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "namespace.h"
@@ -49,6 +47,9 @@ __RCSID("$NetBSD: compat___semctl13.c,v 1.3 2011/01/31 22:51:39 christos Exp $")
 #include <compat/sys/time.h>
 #include <sys/sem.h>
 #include <compat/sys/sem.h>
+#ifdef __lint__
+#include <string.h>
+#endif
 
 __warn_references(__semctl13,
     "warning: reference to compatibility __semctl13(); include <sys/sem.h> to generate correct reference")
diff --git a/lib/libc/compat/sys/compat_semctl.c b/lib/libc/compat/sys/compat_semctl.c
index 96b6ad01c4d4..a8055c24d73f 100644
--- a/lib/libc/compat/sys/compat_semctl.c
+++ b/lib/libc/compat/sys/compat_semctl.c
@@ -1,4 +1,4 @@
-/* $NetBSD: compat_semctl.c,v 1.3 2011/01/31 22:51:39 christos Exp $ */
+/* $NetBSD: compat_semctl.c,v 1.4 2014/08/10 17:55:08 joerg Exp $ */
 
 /*
  * Copyright (c) 1994, 1995 Christopher G. Demetriou
@@ -36,7 +36,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: compat_semctl.c,v 1.3 2011/01/31 22:51:39 christos Exp $");
+__RCSID("$NetBSD: compat_semctl.c,v 1.4 2014/08/10 17:55:08 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #define __LIBC12_SOURCE__
@@ -46,6 +46,9 @@ __RCSID("$NetBSD: compat_semctl.c,v 1.3 2011/01/31 22:51:39 christos Exp $");
 #include <sys/null.h>
 #include <compat/sys/sem.h>
 #include <stdarg.h>
+#ifdef __lint__
+#include <string.h>
+#endif
 
 int
 semctl(int semid, int semnum, int cmd, ...)
diff --git a/lib/libc/sys/semctl.c b/lib/libc/sys/semctl.c
index 1f96563ca380..42cfeeea8b2b 100644
--- a/lib/libc/sys/semctl.c
+++ b/lib/libc/sys/semctl.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: semctl.c,v 1.15 2009/01/16 00:02:57 christos Exp $	*/
+/*	$NetBSD: semctl.c,v 1.16 2014/08/10 17:55:09 joerg Exp $	*/
 
 /*-
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -30,13 +30,16 @@
  */
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: semctl.c,v 1.15 2009/01/16 00:02:57 christos Exp $");
+__RCSID("$NetBSD: semctl.c,v 1.16 2014/08/10 17:55:09 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/sem.h>
 #include <stdarg.h>
+#ifdef __lint__
+#include <string.h>
+#endif
 
 /* The kernel version [... == union semun *] */
 int ____semctl50(int, int, int, ...);