diff --git a/lib/libdisk/create_chunk.c b/lib/libdisk/create_chunk.c
index f226cd20ff42..aa287da6ee5f 100644
--- a/lib/libdisk/create_chunk.c
+++ b/lib/libdisk/create_chunk.c
@@ -20,7 +20,11 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/disklabel.h>
 #include <sys/diskslice.h>
+#ifdef PC98
+#include <sys/diskpc98.h>
+#else
 #include <sys/diskmbr.h>
+#endif
 #include <sys/mount.h>
 #include <sys/stat.h>
 #include <sys/sysctl.h>
diff --git a/lib/libdisk/disk.c b/lib/libdisk/disk.c
index 9302a806fe3d..24b2bfa9f1c2 100644
--- a/lib/libdisk/disk.c
+++ b/lib/libdisk/disk.c
@@ -22,12 +22,16 @@ __FBSDID("$FreeBSD$");
 #include <sys/ioctl.h>
 #include <sys/disklabel.h>
 #include <sys/diskslice.h>
+#ifndef PC98
 #include <sys/diskmbr.h>
+#endif
 #include <paths.h>
 #include "libdisk.h"
 
+#ifndef PC98
 #define DOSPTYP_EXTENDED        5
 #define DOSPTYP_ONTRACK         84
+#endif
 
 const char *chunk_n[] = {
 	"whole",
diff --git a/lib/libdisk/rules.c b/lib/libdisk/rules.c
index 87d7e24a2974..a3dcc1b90a08 100644
--- a/lib/libdisk/rules.c
+++ b/lib/libdisk/rules.c
@@ -17,7 +17,11 @@ __FBSDID("$FreeBSD$");
 #include <sys/types.h>
 #include <sys/diskslice.h>
 #include <sys/disklabel.h>
+#ifdef PC98
+#include <sys/diskpc98.h>
+#else
 #include <sys/diskmbr.h>
+#endif
 #include "libdisk.h"
 
 int
diff --git a/sbin/bsdlabel/bsdlabel.c b/sbin/bsdlabel/bsdlabel.c
index dd3e241ca9df..ad84dea67977 100644
--- a/sbin/bsdlabel/bsdlabel.c
+++ b/sbin/bsdlabel/bsdlabel.c
@@ -64,7 +64,11 @@ __FBSDID("$FreeBSD$");
 #define DKTYPENAMES
 #define FSTYPENAMES
 #include <sys/disklabel.h>
+#ifdef PC98
+#include <sys/diskpc98.h>
+#else
 #include <sys/diskmbr.h>
+#endif
 #ifdef __sparc64__
 #include <sys/sun_disklabel.h>
 #endif
diff --git a/sbin/disklabel/disklabel.c b/sbin/disklabel/disklabel.c
index dd3e241ca9df..ad84dea67977 100644
--- a/sbin/disklabel/disklabel.c
+++ b/sbin/disklabel/disklabel.c
@@ -64,7 +64,11 @@ __FBSDID("$FreeBSD$");
 #define DKTYPENAMES
 #define FSTYPENAMES
 #include <sys/disklabel.h>
+#ifdef PC98
+#include <sys/diskpc98.h>
+#else
 #include <sys/diskmbr.h>
+#endif
 #ifdef __sparc64__
 #include <sys/sun_disklabel.h>
 #endif