diff --git a/sbin/fdisk_pc98/fdisk.c b/sbin/fdisk_pc98/fdisk.c
index 104cf8af543..4021a6c62b2 100644
--- a/sbin/fdisk_pc98/fdisk.c
+++ b/sbin/fdisk_pc98/fdisk.c
@@ -30,6 +30,7 @@ static const char rcsid[] =
 #endif /* not lint */
 
 #include <sys/disklabel.h>
+#include <sys/diskpc98.h>
 #include <sys/stat.h>
 #include <ctype.h>
 #include <fcntl.h>