diff --git a/include/Makefile b/include/Makefile
--- a/include/Makefile
+++ b/include/Makefile
@@ -20,7 +20,8 @@
 	netdb.h nl_types.h nlist.h nss.h nsswitch.h paths.h \
 	printf.h proc_service.h pthread.h \
 	pthread_np.h pwd.h ranlib.h readpassphrase.h regex.h \
-	res_update.h resolv.h runetype.h search.h semaphore.h setjmp.h \
+	res_update.h resolv.h runetype.h sched.h \
+	search.h semaphore.h setjmp.h \
 	signal.h spawn.h stab.h stdalign.h stdbool.h stddef.h \
 	stdnoreturn.h stdio.h stdlib.h string.h stringlist.h \
 	strings.h sysexits.h tar.h termios.h tgmath.h \
@@ -33,7 +34,7 @@
 
 MHDRS=	float.h floatingpoint.h stdarg.h
 
-PHDRS=	sched.h _semaphore.h
+PHDRS=	_semaphore.h
 
 LHDRS=	aio.h errno.h fcntl.h linker_set.h poll.h stdatomic.h stdint.h \
 	syslog.h ucontext.h
diff --git a/include/sched.h b/include/sched.h
new file mode 100644
--- /dev/null
+++ b/include/sched.h
@@ -0,0 +1,46 @@
+/*-
+ * Copyright (c) 2021 The FreeBSD Foundation
+ *
+ * This software were developed by Konstantin Belousov <kib@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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 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 AUTHOR 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 __SCHED_H__
+#define __SCHED_H__
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/sched.h>
+#if __BSD_VISIBLE
+#include <sys/cpuset.h>
+#endif /* __BSD_VISIBLE */
+
+#if __BSD_VISIBLE
+#ifdef _WITH_CPU_SET_T
+struct _cpuset;
+typedef struct _cpuset cpu_set_t;
+#endif /* _WITH_CPU_SET_T */
+#endif /* __BSD_VISIBLE */
+
+#endif	/* __SCHED_H__ */