diff --git a/main.go b/main.go
index d4a2922..b251be0 100644
--- a/main.go
+++ b/main.go
@@ -133,12 +133,11 @@ func handleChannel(channel ssh.Channel, requests <-chan *ssh.Request) {
 			cmd.Env = []string{"PATH=/bin", "TERM=xterm"}
 			cmd.Dir = "/"
 			var err error
-			ptmx, err = pty.Start(cmd)
+			ptmx, err = pty.StartWithSize(cmd, &pty.Winsize{Cols: uint16(termWidth), Rows: uint16(termHeight)})
 			if err != nil {
 				log.Println("PTY start error:", err)
 				return
 			}
-			pty.Setsize(ptmx, &pty.Winsize{Cols: uint16(termWidth), Rows: uint16(termHeight)})
 			go func() {
 				defer ptmx.Close()
 				go io.Copy(channel, ptmx)