diff --git a/bin/callback.js b/bin/callback.js
index d53d7cc..b0e49e5 100644
--- a/bin/callback.js
+++ b/bin/callback.js
@@ -46,7 +46,7 @@ const callbackRequest = (url, timeout, data) => {
       'Content-Length': data.length
     }
   }
-  var req = http.request(options)
+  const req = http.request(options)
   req.on('timeout', () => {
     console.warn('Callback request timed out.')
     req.abort()
diff --git a/bin/server.js b/bin/server.js
index bd085ae..e17a4fa 100755
--- a/bin/server.js
+++ b/bin/server.js
@@ -29,6 +29,6 @@ server.on('upgrade', (request, socket, head) => {
   wss.handleUpgrade(request, socket, head, handleAuth)
 })
 
-server.listen({host, port})
+server.listen({ host, port })
 
 console.log(`running at '${host}' on port ${port}`)