Fix build
diff --git a/tty_plan9.go b/tty_plan9.go
index 8aed668..7828953 100644
--- a/tty_plan9.go
+++ b/tty_plan9.go
@@ -2,9 +2,9 @@
 
 import (
 	"bufio"
+	"errors"
 	"os"
 	"syscall"
-	"errors"
 )
 
 type TTY struct {
@@ -13,7 +13,7 @@
 	out *os.File
 }
 
-func open() (*TTY, error) {
+func open(path string) (*TTY, error) {
 	tty := new(TTY)
 
 	in, err := os.Open("/dev/cons")
diff --git a/tty_windows.go b/tty_windows.go
index 22b538c..73ba6c7 100644
--- a/tty_windows.go
+++ b/tty_windows.go
@@ -142,7 +142,7 @@
 	return nil
 }
 
-func open() (*TTY, error) {
+func open(path string) (*TTY, error) {
 	tty := new(TTY)
 	if false && isatty.IsTerminal(os.Stdin.Fd()) {
 		tty.in = os.Stdin