diff --git a/bin/common/utils.js b/bin/common/utils.js
index b55e5ee48d..9846a15583 100644
--- a/bin/common/utils.js
+++ b/bin/common/utils.js
@@ -13,6 +13,24 @@ const esm = require('esm')(module, {
 
 const getRootDir = argv => resolve(argv._[0] || '.')
 const getNuxtConfigFile = argv => resolve(getRootDir(argv), argv['config-file'])
+const getLatestHost = (argv) => {
+  const port =
+    argv.port ||
+    process.env.NUXT_PORT ||
+    process.env.PORT ||
+    process.env.npm_package_config_nuxt_port
+  const host =
+    argv.hostname ||
+    process.env.NUXT_HOST ||
+    process.env.HOST ||
+    process.env.npm_package_config_nuxt_host
+  const socket =
+    argv['unix-socket'] ||
+    process.env.UNIX_SOCKET ||
+    process.env.npm_package_config_unix_socket
+
+  return { port, host, socket }
+}
 
 exports.nuxtConfigFile = getNuxtConfigFile
 
@@ -47,27 +65,9 @@ exports.loadNuxtConfig = (argv) => {
   if (!options.server) {
     options.server = {}
   }
-  options.server.port = argv.port || options.server.port
-  options.server.host = argv.hostname || options.server.host
-
+  const { port, host, socket } = getLatestHost(argv)
+  options.server.port = port || options.server.port || 3000
+  options.server.host = host || options.server.host || 'localhost'
+  options.server.socket = socket || options.server.socket
   return options
 }
-
-exports.getLatestHost = (argv) => {
-  const port =
-    argv.port ||
-    process.env.NUXT_PORT ||
-    process.env.PORT ||
-    process.env.npm_package_config_nuxt_port
-  const host =
-    argv.hostname ||
-    process.env.NUXT_HOST ||
-    process.env.HOST ||
-    process.env.npm_package_config_nuxt_host
-  const socket =
-    argv['unix-socket'] ||
-    process.env.UNIX_SOCKET ||
-    process.env.npm_package_config_unix_socket
-
-  return { port, host, socket }
-}
diff --git a/bin/nuxt-dev b/bin/nuxt-dev
index ffb856d18f..0315a98222 100755
--- a/bin/nuxt-dev
+++ b/bin/nuxt-dev
@@ -3,7 +3,7 @@ const parseArgs = require('minimist')
 const consola = require('consola')
 const { version } = require('../package.json')
 const { Nuxt, Builder } = require('..')
-const { loadNuxtConfig, getLatestHost } = require('./common/utils')
+const { loadNuxtConfig } = require('./common/utils')
 
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
@@ -74,9 +74,6 @@ const errorHandler = (err, instance) => {
     return errorHandler(err, oldInstance)
   }
 
-  // Get latest environment variables
-  const { port, host, socket } = getLatestHost(argv)
-
   return (
     Promise.resolve()
       .then(() => oldInstance && oldInstance.nuxt.clearHook('watch:fileChanged'))
@@ -91,7 +88,7 @@ const errorHandler = (err, instance) => {
       })
       .then(() => oldInstance && oldInstance.nuxt.close())
       // Start listening
-      .then(() => nuxt.listen(port, host, socket))
+      .then(() => nuxt.listen())
       // Show ready message first time, others will be shown through WebpackBar
       .then(() => !oldInstance && nuxt.showReady(false))
       .then(() => builder.watchServer())
diff --git a/bin/nuxt-start b/bin/nuxt-start
index fc0cbedfe5..3ccb0dac93 100755
--- a/bin/nuxt-start
+++ b/bin/nuxt-start
@@ -4,7 +4,7 @@ const { resolve } = require('path')
 const parseArgs = require('minimist')
 const consola = require('consola')
 const { Nuxt } = require('../dist/nuxt-start')
-const { loadNuxtConfig, getLatestHost } = require('./common/utils')
+const { loadNuxtConfig } = require('./common/utils')
 
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
@@ -79,8 +79,6 @@ if (nuxt.options.render.ssr === true) {
   }
 }
 
-const { port, host, socket } = getLatestHost(argv)
-
-nuxt.listen(port, host, socket).then(() => {
+nuxt.listen().then(() => {
   nuxt.showReady(false)
 })
diff --git a/lib/core/nuxt.js b/lib/core/nuxt.js
index 60546cd527..0cc4a330e3 100644
--- a/lib/core/nuxt.js
+++ b/lib/core/nuxt.js
@@ -142,7 +142,7 @@ export default class Nuxt {
     this.readyMessage = null
   }
 
-  listen(port = 3000, host = 'localhost', socket = null) {
+  listen(port, host, socket) {
     return this.ready().then(() => new Promise((resolve, reject) => {
       if (!socket && typeof this.options.server.socket === 'string') {
         socket = this.options.server.socket
@@ -153,8 +153,8 @@ export default class Nuxt {
       if (socket) {
         args.path = socket
       } else {
-        args.port = port
-        args.host = host
+        args.port = port || this.options.server.port
+        args.host = host || this.options.server.host
       }
 
       let appServer
diff --git a/test/unit/cli.test.js b/test/unit/cli.test.js
index c0ea20046d..64570c57a2 100644
--- a/test/unit/cli.test.js
+++ b/test/unit/cli.test.js
@@ -1,5 +1,5 @@
-import { spawn } from 'child_process'
 import { resolve, join } from 'path'
+import { spawn } from 'cross-spawn'
 import { writeFileSync } from 'fs-extra'
 import { getPort, rp, waitUntil, Utils } from '../utils'
 
diff --git a/test/unit/with-config.test.js b/test/unit/with-config.test.js
index 42341199cd..76659d6372 100644
--- a/test/unit/with-config.test.js
+++ b/test/unit/with-config.test.js
@@ -163,3 +163,16 @@ describe('with-config', () => {
     await nuxt.close()
   })
 })
+
+describe('server config', () => {
+  test('opens on port defined in server.port', async () => {
+    const config = await loadFixture('with-config')
+    config.server.port = port = await getPort()
+    nuxt = new Nuxt(config)
+    await nuxt.listen()
+    await nuxt.renderAndGetWindow(url('/test/'))
+  })
+  afterAll(async () => {
+    await nuxt.close()
+  })
+})