diff --git a/include/machine/_stdint.h b/include/machine/_stdint.h
index 7d8f763..b876c53 100644
--- a/include/machine/_stdint.h
+++ b/include/machine/_stdint.h
@@ -1,42 +1,3 @@
-/*-
- * Copyright (c) 2001, 2002 Mike Barcroft <mike@FreeBSD.org>
- * Copyright (c) 2001 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Klaus Klein.
- *
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *        This product includes software developed by the NetBSD
- *        Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- *    contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``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 FOUNDATION OR CONTRIBUTORS
- * 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: releng/11.2/sys/x86/include/_stdint.h 301030 2016-05-31 08:38:24Z ed $
- */
-
 #ifndef _MACHINE__STDINT_H_
 #define	_MACHINE__STDINT_H_
 
diff --git a/include/sys/types.h b/include/sys/types.h
index 806fcd6..1acd571 100644
--- a/include/sys/types.h
+++ b/include/sys/types.h
@@ -138,11 +138,6 @@
 #define _TIME_T_DECLARED
 #endif
 
-typedef uint32_t uintmax_t;
-typedef int32_t intmax_t;
-typedef int32_t ptrdiff_t;
-typedef uint32_t uintptr_t;
-
 #define __ULONG_MAX     0xffffffffUL
 #define __USHRT_MAX     0xffff          /* max value for an unsigned short */