diff --git a/Build.sh b/Build.sh
index 97bd9a0..f9b831f 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $MirOS: src/bin/mksh/Build.sh,v 1.65 2006/11/09 00:08:25 tg Exp $
+# $MirOS: src/bin/mksh/Build.sh,v 1.66 2006/11/09 00:11:38 tg Exp $
 #-
 # Environment: CC, CFLAGS, CPPFLAGS, LDFLAGS, LIBS, NROFF
 
@@ -191,6 +191,11 @@ ac_test strlcpy <<-'EOF'
 	int main(int ac, char *av[]) { strlcpy(av[0], av[1], 1); return (ac); }
 EOF
 
+ac_test sys_param_h '' '<sys/param.h>' <<'EOF'
+	#include <sys/param.h>
+	int main(void) { return (0); }
+EOF
+
 $e ... done.
 addsrcs HAVE_SETMODE setmode.c
 addsrcs HAVE_STRLCAT strlfun.c
diff --git a/Makefile b/Makefile
index 7b8203d..c4a6cad 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,9 @@
-# $MirOS: src/bin/mksh/Makefile,v 1.15 2006/11/08 23:45:46 tg Exp $
+# $MirOS: src/bin/mksh/Makefile,v 1.16 2006/11/09 00:11:39 tg Exp $
 
 PROG=		mksh
 SRCS=		alloc.c edit.c eval.c exec.c expr.c funcs.c histrap.c \
 		jobs.c lex.c main.c misc.c shf.c syn.c tree.c var.c
-CPPFLAGS+=	-DHAVE_ARC4RANDOM -DHAVE_ARC4RANDOM_PUSH
+CPPFLAGS+=	-DHAVE_ARC4RANDOM -DHAVE_ARC4RANDOM_PUSH -DHAVE_SYS_PARAM_H
 CPPFLAGS+=	-DHAVE_LANGINFO_CODESET -DHAVE_SETLOCALE_CTYPE
 CPPFLAGS+=	-DHAVE_SETMODE -DHAVE_STRLCAT -DHAVE_STRLCPY
 CDIAGFLAGS+=	-Wno-cast-qual
diff --git a/sh.h b/sh.h
index c15e95b..a78d91c 100644
--- a/sh.h
+++ b/sh.h
@@ -8,10 +8,13 @@
 /*	$OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $	*/
 /*	$OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $	*/
 
-#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.53 2006/11/08 23:50:47 tg Exp $"
+#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.54 2006/11/09 00:11:39 tg Exp $"
 #define MKSH_VERSION "R29 2006/11/08"
 
-#include <sys/cdefs.h>
+#if HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#include <sys/types.h>
 #if !defined(__RCSID) || !defined(__SCCSID)
 #if !defined(__GNUC__) || defined(lint)
 #define __attribute__(x)		/* deleted */
@@ -30,7 +33,6 @@
 #define	__SCCSID(x)	__IDSTRING(sccsid,x)
 #endif
 
-#include <sys/param.h>
 #include <sys/time.h>
 #include <sys/file.h>
 #include <sys/ioctl.h>