diff --git a/sys/sys/uuid.h b/sys/sys/uuid.h
index 95050d0f8d20..bbb85732dd50 100644
--- a/sys/sys/uuid.h
+++ b/sys/sys/uuid.h
@@ -1,101 +1,101 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
  * Copyright (c) 2002 Marcel Moolenaar
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 
 #ifndef _SYS_UUID_H_
 #define	_SYS_UUID_H_
 
-#include <sys/cdefs.h>
+#include <sys/types.h>
 
 /* Length of a node address (an IEEE 802 address). */
 #define	_UUID_NODE_LEN		6
 
 /*
  * See also:
  *      http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
  *      http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
  *
  * A DCE 1.1 compatible source representation of UUIDs.
  */
 struct uuid {
 	uint32_t	time_low;
 	uint16_t	time_mid;
 	uint16_t	time_hi_and_version;
 	uint8_t		clock_seq_hi_and_reserved;
 	uint8_t		clock_seq_low;
 	uint8_t		node[_UUID_NODE_LEN];
 };
 
 #ifdef _KERNEL
 
 #define	UUID_NODE_LEN	_UUID_NODE_LEN
 
 struct sbuf;
 
 struct uuid *kern_uuidgen(struct uuid *, size_t);
 
 int uuid_ether_add(const uint8_t *);
 int uuid_ether_del(const uint8_t *);
 
 int snprintf_uuid(char *, size_t, struct uuid *);
 int printf_uuid(struct uuid *);
 int sbuf_printf_uuid(struct sbuf *, struct uuid *);
 
 /*
  * validate_uuid will, with no flags passed, validate only the format of the
  * passed in UUID.  Flags below are available to give it part of or all of the
  * functionality that parse_uuid has traditionally had: acknowledging an empty
  * string as valid, and checking the semantics of the UUID as well.
  */
 int validate_uuid(const char *, size_t, struct uuid *, int);
 int parse_uuid(const char *, struct uuid *);
 
 /* Flags to validate_uuid(). */
 #define	VUUIDF_EMPTYOK		0x0001
 #define	VUUIDF_CHECKSEMANTICS	0x0002
 
 int uuidcmp(const struct uuid *, const struct uuid *);
 
 void be_uuid_dec(void const *buf, struct uuid *uuid);
 void be_uuid_enc(void *buf, struct uuid const *uuid);
 void le_uuid_dec(void const *buf, struct uuid *uuid);
 void le_uuid_enc(void *buf, struct uuid const *uuid);
 
 #else	/* _KERNEL */
 
 /* XXX namespace pollution? */
 typedef struct uuid uuid_t;
 
 __BEGIN_DECLS
 int	uuidgen(struct uuid *, int);
 __END_DECLS
 
 #endif	/* _KERNEL */
 
 #endif /* _SYS_UUID_H_ */