diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c
index ef6c727ef5ef..5947afb0017e 100644
--- a/drivers/usb/misc/sisusbvga/sisusb_con.c
+++ b/drivers/usb/misc/sisusbvga/sisusb_con.c
@@ -321,7 +321,7 @@ sisusbcon_deinit(struct vc_data *c)
 /* interface routine */
 static u8
 sisusbcon_build_attr(struct vc_data *c, u8 color, u8 intensity,
-			    u8 blink, u8 underline, u8 reverse)
+			    u8 blink, u8 underline, u8 reverse, u8 unused)
 {
 	u8 attr = color;