diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index aad1359a3eb18719c30dff180f70482b131ae886..abbc2d8350af7832b06884232ffa3beaa49346a6 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -166,6 +166,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_OPENDCC_PID) },
 	{ USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) },
 	{ USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_SPROG_II) },
 	{ USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_XF_547_PID) },
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index 07a3992abad2b546095e35d247a3d7e68aec1eec..70703b706b0906d7dc592ad2f3fdde56d5b13499 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -75,6 +75,9 @@
 /* OpenDCC (www.opendcc.de) product id */
 #define FTDI_OPENDCC_PID	0xBFD8
 
+/* Sprog II (Andrew Crosland's SprogII DCC interface) */
+#define FTDI_SPROG_II		0xF0C8
+
 /* www.crystalfontz.com devices - thanx for providing free devices for evaluation ! */
 /* they use the ftdi chipset for the USB interface and the vendor id is the same */
 #define FTDI_XF_632_PID 0xFC08	/* 632: 16x2 Character Display */