diff --git a/cli/client.js b/cli/client.js
index 4459950..5ecfd32 100755
--- a/cli/client.js
+++ b/cli/client.js
@@ -51,7 +51,7 @@ for (const item of header_items) {
 	headers[key.trim()] = data.join(':').trim()
 }
 
-startClient(tunnel, target, port, headers, (err) => {
+startClient(tunnel, target, port, {headers}, (err) => {
 	if (err) showError(err)
 	else console.info(`tunneling ${target} via ${tunnel} & exposing it on port ${port}`)
 })
diff --git a/tunnel.js b/tunnel.js
index 9bd1a8d..ac0621e 100644
--- a/tunnel.js
+++ b/tunnel.js
@@ -4,8 +4,8 @@ const ws = require('websocket-stream')
 const pipe = require('pump')
 const debug = require('debug')('tcp-over-websockets:client')
 
-const tunnelTo = (tunnel, target, headers) => (local) => {
-	const remote = ws(tunnel + (tunnel.slice(-1) === '/' ? '' : '/') + target, {headers : headers})
+const tunnelTo = (tunnel, target, opt) => (local) => {
+	const remote = ws(tunnel + (tunnel.slice(-1) === '/' ? '' : '/') + target, opt)
 
 	const onError = (err) => {
 		if (err) debug(err)