diff --git a/spec/api-browser-window-spec.js b/spec/api-browser-window-spec.js
index ab40331225a3..c726a1b8b0ef 100644
--- a/spec/api-browser-window-spec.js
+++ b/spec/api-browser-window-spec.js
@@ -1262,51 +1262,28 @@ describe('BrowserWindow module', function () {
     })
 
     describe('mixed sandbox option', function () {
-      // TOOD (juturu): This test needs to be fixed
-      let sandboxServer = null
-      const socketPath = process.platform === 'win32' ? '\\\\.\\pipe\\electron-app-mixed-sandbox' : '/tmp/electron-app-mixed-sandbox'
+      this.timeout(120000)
 
-      beforeEach(function (done) {
-        fs.unlink(socketPath, () => {
-          sandboxServer = net.createServer()
-          sandboxServer.listen(socketPath)
-          done()
-        })
-      })
+      let appProcess
 
-      afterEach(function (done) {
-        sandboxServer.close(() => {
-          if (process.platform === 'win32') {
-            done()
-          } else {
-            fs.unlink(socketPath, () => {
-              done()
-            })
-          }
-        })
+      afterEach(function () {
+        if (appProcess != null) {
+          appProcess.kill()
+        }
       })
 
       it('adds --enable-sandbox to render processes created with sandbox: true', (done) => {
-        this.timeout(120000)
-
-        let state = 'none'
-        sandboxServer.once('error', (error) => {
-          done(error)
-        })
-        sandboxServer.on('connection', (client) => {
-          client.once('data', function (data) {
-            if (String(data) === 'false' && state === 'none') {
-              state = 'first-launch'
-            } else if (String(data) === 'true' && state === 'first-launch') {
-              done()
-            } else {
-              done(`Unexpected state: ${data}`)
-            }
-          })
-        })
-
         const appPath = path.join(__dirname, 'fixtures', 'api', 'mixed-sandbox-app')
-        ChildProcess.spawn(remote.process.execPath, [appPath])
+        ©appProcess = ChildProcess.spawn(remote.process.execPath, [appPath, '--enable-mixed-sandbox'], {stdio: ['ignore', 'ipc', 'ignore']})
+        appProcess.once('message', (argv) => {
+          assert.equal(argv.sandbox.includes('--enable-sandbox'), true)
+          assert.equal(argv.sandbox.includes('--no-sandbox'), false)
+
+          assert.equal(argv.noSandbox.includes('--enable-sandbox'), false)
+          assert.equal(argv.noSandbox.includes('--no-sandbox'), true)
+
+          done()
+        })
       })
     })
 
diff --git a/spec/fixtures/api/mixed-sandbox-app/electron-app-mixed-sandbox-preload.js b/spec/fixtures/api/mixed-sandbox-app/electron-app-mixed-sandbox-preload.js
index 3efe83276cb3..abe0eeea87ed 100644
--- a/spec/fixtures/api/mixed-sandbox-app/electron-app-mixed-sandbox-preload.js
+++ b/spec/fixtures/api/mixed-sandbox-app/electron-app-mixed-sandbox-preload.js
@@ -1,8 +1 @@
-const { ipcRenderer } = require('electron')
-if (process) {
-  process.once('loaded', function () {
-    ipcRenderer.send('processArgs', process.argv)
-  })
-} else {
-  ipcRenderer.send('processArgs', 'unable to get process args')
-}
+require('electron').ipcRenderer.send('argv', process.argv)
diff --git a/spec/fixtures/api/mixed-sandbox-app/main.js b/spec/fixtures/api/mixed-sandbox-app/main.js
index fe8c2e45f3e5..7823208b72e2 100644
--- a/spec/fixtures/api/mixed-sandbox-app/main.js
+++ b/spec/fixtures/api/mixed-sandbox-app/main.js
@@ -1,39 +1,46 @@
-const { app, BrowserWindow, ipcMain } = require('electron')
-const net = require('net')
+const {app, BrowserWindow, ipcMain} = require('electron')
 const path = require('path')
 
-const socketPath = process.platform === 'win32' ? '\\\\.\\pipe\\electron-app-mixed-sandbox' : '/tmp/electron-app-mixed-sandbox'
-
 process.on('uncaughtException', () => {
   app.exit(1)
 })
 
-app.once('ready', () => {
-  let lastArg = process.argv[process.argv.length - 1]
-  const client = net.connect(socketPath)
-  client.once('connect', () => {
-    if (lastArg === '--enable-mixed-sandbox') {
-      ipcMain.on('processArgs', (event, args) => {
-        client.end(String(args.indexOf('--no-sandbox') >= 0))
-      })
-      let window = new BrowserWindow({
-        show: false,
-        webPreferences: {
-          preload: path.join(app.getAppPath(), 'electron-app-mixed-sandbox-preload.js'),
-          sandbox: false
-        }
-      })
+let sandboxWindow
+let noSandboxWindow
 
-      window.loadURL('data:,window')
-    } else {
-      client.end(String(false))
+app.once('ready', () => {
+  sandboxWindow = new BrowserWindow({
+    show: false,
+    webPreferences: {
+      preload: path.join(app.getAppPath(), 'electron-app-mixed-sandbox-preload.js'),
+      sandbox: true
     }
   })
-  client.once('end', () => {
-    app.exit(0)
-  })
+  sandboxWindow.loadURL('about:blank')
 
-  if (lastArg !== '--enable-mixed-sandbox') {
-    app.relaunch({ args: process.argv.slice(1).concat('--enable-mixed-sandbox') })
+  noSandboxWindow = new BrowserWindow({
+    show: false,
+    webPreferences: {
+      preload: path.join(app.getAppPath(), 'electron-app-mixed-sandbox-preload.js'),
+      sandbox: false
+    }
+  })
+  noSandboxWindow.loadURL('about:blank')
+
+  const argv = {
+    sandbox: null,
+    noSandbox: null
   }
+
+  ipcMain.on('argv', (event, value) => {
+    if (event.sender === sandboxWindow.webContents) {
+      argv.sandbox = value
+    } else if (event.sender === noSandboxWindow.webContents) {
+      argv.noSandbox = value
+    }
+
+    if (argv.sandbox != null && argv.noSandbox != null) {
+      process.send(argv)
+    }
+  })
 })