diff --git a/drivers/isdn/hardware/mISDN/w6692.c b/drivers/isdn/hardware/mISDN/w6692.c
index 1b9008f13d6a..d3f1077b709b 100644
--- a/drivers/isdn/hardware/mISDN/w6692.c
+++ b/drivers/isdn/hardware/mISDN/w6692.c
@@ -1234,7 +1234,7 @@ w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
 	return err;
 }
 
-int
+static int
 setup_w6692(struct w6692_hw *card)
 {
 	u32	val;