diff --git a/sys/i386/include/ioctl_fd.h b/sys/i386/include/ioctl_fd.h
index f3bf953cd9d..f5a5d6af6ed 100644
--- a/sys/i386/include/ioctl_fd.h
+++ b/sys/i386/include/ioctl_fd.h
@@ -24,7 +24,7 @@
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * $Id$
+ * $Id: ioctl_fd.h,v 1.5 1994/09/17 16:55:59 davidg Exp $
  */
 
 #ifndef _IOCTL_FD_H
@@ -104,4 +104,18 @@ struct fd_type {
 
 #define FDOPT_NORETRY 0x0001	/* no retries on failure (cleared on close) */
 
+/*
+ * The following definitions duplicate those in sys/i386/isa/fdreg.h
+ * They are here since their values are to be used in the above
+ * structure when formatting a floppy. For very obvious reasons, both
+ * definitions must match ;-)
+ */
+#ifndef FDC_500KBPS
+#define	FDC_500KBPS	0x00	/* 500KBPS MFM drive transfer rate */
+#define	FDC_300KBPS	0x01	/* 300KBPS MFM drive transfer rate */
+#define	FDC_250KBPS	0x02	/* 250KBPS MFM drive transfer rate */
+#define	FDC_125KBPS	0x03	/* 125KBPS FM drive transfer rate */
+				/* for some controllers 1MPBS instead */
+#endif /* FDC_500KBPS */
+
 #endif  /* !def _IOCTL_FD_H */
diff --git a/sys/sys/fdcio.h b/sys/sys/fdcio.h
index f3bf953cd9d..f5a5d6af6ed 100644
--- a/sys/sys/fdcio.h
+++ b/sys/sys/fdcio.h
@@ -24,7 +24,7 @@
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * $Id$
+ * $Id: ioctl_fd.h,v 1.5 1994/09/17 16:55:59 davidg Exp $
  */
 
 #ifndef _IOCTL_FD_H
@@ -104,4 +104,18 @@ struct fd_type {
 
 #define FDOPT_NORETRY 0x0001	/* no retries on failure (cleared on close) */
 
+/*
+ * The following definitions duplicate those in sys/i386/isa/fdreg.h
+ * They are here since their values are to be used in the above
+ * structure when formatting a floppy. For very obvious reasons, both
+ * definitions must match ;-)
+ */
+#ifndef FDC_500KBPS
+#define	FDC_500KBPS	0x00	/* 500KBPS MFM drive transfer rate */
+#define	FDC_300KBPS	0x01	/* 300KBPS MFM drive transfer rate */
+#define	FDC_250KBPS	0x02	/* 250KBPS MFM drive transfer rate */
+#define	FDC_125KBPS	0x03	/* 125KBPS FM drive transfer rate */
+				/* for some controllers 1MPBS instead */
+#endif /* FDC_500KBPS */
+
 #endif  /* !def _IOCTL_FD_H */