diff --git a/include/Makefile b/include/Makefile
index 9fc93e9029e4..70599c81b7a0 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.99 2001/12/12 00:07:50 tv Exp $
+#	$NetBSD: Makefile,v 1.100 2002/02/02 17:31:52 thorpej Exp $
 #	@(#)Makefile	8.2 (Berkeley) 1/4/94
 
 # Doing a make includes builds /usr/include
@@ -15,9 +15,9 @@ INCS=	a.out.h ar.h assert.h bitstring.h bm.h cpio.h ctype.h db.h dirent.h \
 	nl_types.h \
 	nsswitch.h paths.h pwd.h ranlib.h re_comp.h regex.h regexp.h \
 	resolv.h rmd160.h rmt.h sched.h search.h setjmp.h sgtty.h signal.h \
-	stab.h stddef.h stdio.h stdlib.h string.h strings.h stringlist.h \
-	struct.h sysexits.h tar.h time.h ttyent.h tzfile.h ulimit.h unistd.h \
-	util.h utime.h utmp.h vis.h wchar.h wctype.h
+	stab.h stdbool.h stddef.h stdio.h stdlib.h string.h strings.h \
+	stringlist.h struct.h sysexits.h tar.h time.h ttyent.h tzfile.h \
+	ulimit.h unistd.h util.h utime.h utmp.h vis.h wchar.h wctype.h
 INCS+=	arpa/ftp.h arpa/inet.h arpa/nameser.h arpa/telnet.h arpa/tftp.h
 INCS+=	protocols/dumprestore.h protocols/routed.h protocols/rwhod.h \
 	protocols/talkd.h protocols/timed.h
diff --git a/include/stdbool.h b/include/stdbool.h
new file mode 100644
index 000000000000..1af7432d4e37
--- /dev/null
+++ b/include/stdbool.h
@@ -0,0 +1,49 @@
+/*	$NetBSD: stdbool.h,v 1.1 2002/02/02 17:31:52 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of Wasabi Systems, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _STDBOOL_H_
+#define	_STDBOOL_H_
+
+#define	bool	_Bool
+
+#define	true	1
+#define	false	0
+
+#define	__bool_true_false_are_defined	1
+
+#endif /* _STDBOOL_H_ */