diff --git a/sys/sys/_cpuset.h b/sys/sys/_cpuset.h
index 8b77721f4b3c..b87cfb5d3f80 100644
--- a/sys/sys/_cpuset.h
+++ b/sys/sys/_cpuset.h
@@ -1,57 +1,59 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2008,	Jeffrey Roberson <jeff@freebsd.org>
  * All rights reserved.
  *
  * Copyright (c) 2008 Nokia Corporation
  * 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 unmodified, 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.
  */
 
 #ifndef _SYS__CPUSET_H_
 #define	_SYS__CPUSET_H_
 
 #include <sys/_bitset.h>
 
 #ifdef _KERNEL
+#include <machine/param.h>
+
 #define	CPU_SETSIZE	MAXCPU
 #endif
 
 #define	CPU_MAXSIZE	1024
 
 #ifndef	CPU_SETSIZE
 #define	CPU_SETSIZE	CPU_MAXSIZE
 #endif
 
 __BITSET_DEFINE(_cpuset, CPU_SETSIZE);
 typedef struct _cpuset cpuset_t;
 
 #ifndef _KERNEL
 __BEGIN_DECLS
 cpuset_t *__cpuset_alloc(size_t set_size);
 void __cpuset_free(cpuset_t *ptr);
 __END_DECLS
 #endif
 
 #endif /* !_SYS__CPUSET_H_ */
diff --git a/sys/sys/_domainset.h b/sys/sys/_domainset.h
index 11ddef0e1909..857aaba67990 100644
--- a/sys/sys/_domainset.h
+++ b/sys/sys/_domainset.h
@@ -1,58 +1,60 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2017,	Jeffrey Roberson <jeff@freebsd.org>
  * 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 unmodified, 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.
  */
 
 #ifndef _SYS__DOMAINSET_H_
 #define	_SYS__DOMAINSET_H_
 
 #include <sys/_bitset.h>
 
 #ifdef _KERNEL
+#include <machine/param.h>
+
 #define	DOMAINSET_SETSIZE	MAXMEMDOM
 #endif
 
 #define	DOMAINSET_MAXSIZE	256
 
 #ifndef	DOMAINSET_SETSIZE
 #define	DOMAINSET_SETSIZE	DOMAINSET_MAXSIZE
 #endif
 
 __BITSET_DEFINE(_domainset, DOMAINSET_SETSIZE);
 typedef struct _domainset domainset_t;
 
 /*
  * This structure is intended to be embedded in objects which have policy
  * attributes.  Each object keeps its own iterator so round-robin is
  * synchronized and accurate.
  */
 struct domainset;
 struct domainset_ref {
 	struct domainset * volatile	dr_policy;
 	unsigned int			dr_iter;
 };
 
 #endif /* !_SYS__DOMAINSET_H_ */