--- a/driver/wl_linux.c
+++ b/driver/wl_linux.c
@@ -1583,7 +1583,7 @@ wl_add_if(wl_info_t *wl, struct wlc_if*
 
 	wl_if_setup(wlif->dev);
 
-	sprintf(wlif->dev->name, "%s%d.%d", devname, wl->pub->unit, wlif->subunit);
+	sprintf(wlif->dev->name, "%s%d-%d", devname, wl->pub->unit, wlif->subunit);
 	if (remote)
 		bcopy(remote, &wlif->remote, ETHER_ADDR_LEN);
 
