diff --git a/include/Makefile b/include/Makefile
index bb869cbd7..b80d23585 100644
--- a/include/Makefile
+++ b/include/Makefile
@@ -6,7 +6,7 @@ INCS=	alloca.h ansi.h a.out.h ar.h assert.h configfile.h ctype.h \
 	inttypes.h libgen.h lib.h libutil.h limits.h locale.h \
 	mathconst.h math.h midiparser.h netdb.h pwd.h regex.h \
 	regexp.h setjmp.h sgtty.h signal.h stdarg.h stddef.h \
-	stdint.h stdio.h stdlib.h string.h strings.h sysexits.h \
+	stdint.h stdbool.h stdio.h stdlib.h string.h strings.h sysexits.h \
 	syslog.h tar.h termcap.h termios.h time.h timers.h tools.h \
 	ttyent.h ucontext.h unistd.h utime.h utmp.h wchar.h wctype.h \
 	hgfs.h tzfile.h util.h
diff --git a/include/stdbool.h b/include/stdbool.h
new file mode 100644
index 000000000..21e1781e7
--- /dev/null
+++ b/include/stdbool.h
@@ -0,0 +1,53 @@
+/*	$NetBSD: stdbool.h,v 1.3 2008/04/28 20:22:54 martin 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.
+ *
+ * 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_
+
+#ifndef __cplusplus
+#define	bool	_Bool
+
+#define	true	1
+#define	false	0
+#else
+#define	bool	bool
+
+#define	true	true
+#define	false	false
+#endif /* __cplusplus */
+
+#define	__bool_true_false_are_defined	1
+
+#if __STDC_VERSION__ < 199901L && __GNUC__ < 3
+typedef int     _Bool;
+#endif
+
+#endif /* _STDBOOL_H_ */