diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.h b/drivers/isdn/hardware/mISDN/hfcsusb.h
index 4157311d569d01e0509898db2b0f02165b76c892..5f8f1d9cac11a0b9b3c5d36a8e3b758644dd2e2b 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.h
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.h
@@ -337,7 +337,7 @@ static const char *HFC_NT_LAYER1_STATES[HFC_MAX_NT_LAYER1_STATE + 1] = {
 };
 
 /* supported devices */
-static struct usb_device_id hfcsusb_idtab[] = {
+static const struct usb_device_id hfcsusb_idtab[] = {
 	{
 		USB_DEVICE(0x0959, 0x2bd0),
 		.driver_info = (unsigned long) &((struct hfcsusb_vdata)