diff --git a/package.json b/package.json
index 9a6fd7b..12a3494 100644
--- a/package.json
+++ b/package.json
@@ -60,4 +60,4 @@
     "Greenkeeper <support@greenkeeper.io>",
     "Richard Littauer <richard.littauer@gmail.com>"
   ]
-}
\ No newline at end of file
+}
diff --git a/src/index.js b/src/index.js
index 21a5a6f..b7acf9e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -4,6 +4,7 @@ const connect = require('pull-ws/client')
 const mafmt = require('mafmt')
 const includes = require('lodash.includes')
 const Connection = require('interface-connection').Connection
+
 const maToUrl = require('./ma-to-url')
 const debug = require('debug')
 const log = debug('libp2p:websockets:dialer')
diff --git a/src/ma-to-url.js b/src/ma-to-url.js
index 86beff6..8612069 100644
--- a/src/ma-to-url.js
+++ b/src/ma-to-url.js
@@ -1,21 +1,36 @@
 'use strict'
 
-const multiaddr = require('multiaddr')
+const debug = require('debug')
+const log = debug('libp2p:websockets:dialer')
 
 function maToUrl (ma) {
   const maStrSplit = ma.toString().split('/')
-  const proto = ma.protos()[2].name
 
-  if (!(proto === 'ws' || proto === 'wss')) {
-    throw new Error('invalid multiaddr' + ma.toString())
+  let proto
+  try {
+    proto = ma.protoNames().filter((proto) => {
+      return proto === 'ws' || proto === 'wss'
+    })[0]
+  } catch (e) {
+    log(e)
+    throw new Error('Not a valid websocket address', e)
   }
 
-  let url = ma.protos()[2].name + '://' + maStrSplit[2]
-
-  if (!multiaddr.isName(ma)) {
-    url += ':' + maStrSplit[4]
+  let port
+  try {
+    port = ma.stringTuples().filter((tuple) => {
+      if (tuple[0] === ma.protos().filter((proto) => {
+        return proto.name === 'tcp'
+      })[0].code) {
+        return true
+      }
+    })[0][1]
+  } catch (e) {
+    log('No port, skipping')
   }
 
+  let url = `${proto}://${maStrSplit[2]}${(port && (port !== 80 || port !== 443) ? `:${port}` : '')}`
+
   return url
 }
 
diff --git a/test/compliance.node.js b/test/compliance.node.js
index 1487ebe..3f31f97 100644
--- a/test/compliance.node.js
+++ b/test/compliance.node.js
@@ -11,9 +11,9 @@ describe('compliance', () => {
       let ws = new WS()
       const addrs = [
         multiaddr('/ip4/127.0.0.1/tcp/9091/ws'),
-        multiaddr('/ip4/127.0.0.1/tcp/9092/wss')
-        // multiaddr('/dns4/awesome-dns-server.com/tcp/9092/ws'),
-        // multiaddr('/dns4/awesome-dns-server.com/tcp/9092/wss')
+        multiaddr('/ip4/127.0.0.1/tcp/9092/wss'),
+        multiaddr('/dns4/ipfs.io/tcp/9092/ws'),
+        multiaddr('/dns4/ipfs.io/tcp/9092/wss')
       ]
       callback(null, ws, addrs)
     },
diff --git a/test/node.js b/test/node.js
index dc8a17a..19875fb 100644
--- a/test/node.js
+++ b/test/node.js
@@ -10,6 +10,7 @@ const pull = require('pull-stream')
 const goodbye = require('pull-goodbye')
 
 const WS = require('../src')
+const maToUrl = require('../src/ma-to-url')
 
 require('./compliance.node')
 
@@ -425,7 +426,27 @@ describe('valid Connection', () => {
   })
 })
 
+describe('ma-to-url test', function () {
+  it('should convert ipv4 ma to url', function () {
+    expect(maToUrl(multiaddr('/ip4/127.0.0.1/ws'))).to.equal('ws://127.0.0.1')
+  })
+
+  it('should convert ipv4 ma with port to url', function () {
+    expect(maToUrl(multiaddr('/ip4/127.0.0.1/tcp/80/ws'))).to.equal('ws://127.0.0.1:80')
+  })
+
+  it('should convert dns ma to url', function () {
+    expect(maToUrl(multiaddr('/dns4/ipfs.io/ws'))).to.equal('ws://ipfs.io')
+  })
+
+  it('should convert dns ma  with port to url', function () {
+    expect(maToUrl(multiaddr('/dns4/ipfs.io/tcp/80/ws'))).to.equal('ws://ipfs.io:80')
+  })
+})
+
 describe.skip('turbolence', () => {
-  it('dialer - emits error on the other end is terminated abruptly', (done) => {})
-  it('listener - emits error on the other end is terminated abruptly', (done) => {})
+  it('dialer - emits error on the other end is terminated abruptly', (done) => {
+  })
+  it('listener - emits error on the other end is terminated abruptly', (done) => {
+  })
 })