diff --git a/lib/config.js b/lib/config.js
index 008e981b0..243b54525 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -199,6 +199,10 @@ var normalizeConfig = function (config, configFilePath) {
     throw new TypeError('Invalid configuration: formatError option must be a function.')
   }
 
+  if (config.processKillTimeout && !helper.isNumber(config.processKillTimeout)) {
+    throw new TypeError('Invalid configuration: processKillTimeout option must be a number.')
+  }
+
   var defaultClient = config.defaultClient || {}
   Object.keys(defaultClient).forEach(function (key) {
     var option = config.client[key]
@@ -321,6 +325,7 @@ var Config = function () {
   this.browserDisconnectTimeout = 2000
   this.browserDisconnectTolerance = 0
   this.browserNoActivityTimeout = 10000
+  this.processKillTimeout = 2000
   this.concurrency = Infinity
   this.failOnEmptyTestSuite = true
   this.retryLimit = 2
diff --git a/lib/helper.js b/lib/helper.js
index 0356edc2f..7c317cb9d 100644
--- a/lib/helper.js
+++ b/lib/helper.js
@@ -80,6 +80,7 @@ exports.isFunction = _.isFunction
 exports.isString = _.isString
 exports.isObject = _.isObject
 exports.isArray = _.isArray
+exports.isNumber = _.isNumber
 
 var ABS_URL = /^https?:\/\//
 exports.isUrlAbsolute = function (url) {
diff --git a/lib/launcher.js b/lib/launcher.js
index 67c0ebe56..be15dcf56 100644
--- a/lib/launcher.js
+++ b/lib/launcher.js
@@ -14,13 +14,14 @@ var baseBrowserDecoratorFactory = function (
   baseLauncherDecorator,
   captureTimeoutLauncherDecorator,
   retryLauncherDecorator,
-  processLauncherDecorator
+  processLauncherDecorator,
+  processKillTimeout
 ) {
   return function (launcher) {
     baseLauncherDecorator(launcher)
     captureTimeoutLauncherDecorator(launcher)
     retryLauncherDecorator(launcher)
-    processLauncherDecorator(launcher)
+    processLauncherDecorator(launcher, processKillTimeout)
   }
 }
 
@@ -39,7 +40,7 @@ var Launcher = function (server, emitter, injector) {
     return null
   }
 
-  this.launchSingle = function (protocol, hostname, port, urlRoot, upstreamProxy) {
+  this.launchSingle = function (protocol, hostname, port, urlRoot, upstreamProxy, processKillTimeout) {
     var self = this
     return function (name) {
       if (upstreamProxy) {
@@ -53,6 +54,7 @@ var Launcher = function (server, emitter, injector) {
       var locals = {
         id: ['value', Launcher.generateId()],
         name: ['value', name],
+        processKillTimeout: ['value', processKillTimeout],
         baseLauncherDecorator: ['factory', baseDecorator],
         captureTimeoutLauncherDecorator: ['factory', captureTimeoutDecorator],
         retryLauncherDecorator: ['factory', retryDecorator],
@@ -157,7 +159,8 @@ var Launcher = function (server, emitter, injector) {
 
   this.launch.$inject = [
     'config.browsers',
-    'config.concurrency'
+    'config.concurrency',
+    'config.processKillTimeout'
   ]
 
   this.launchSingle.$inject = [
@@ -165,7 +168,8 @@ var Launcher = function (server, emitter, injector) {
     'config.hostname',
     'config.port',
     'config.urlRoot',
-    'config.upstreamProxy'
+    'config.upstreamProxy',
+    'config.processKillTimeout'
   ]
 
   this.kill = function (id, callback) {
diff --git a/lib/launchers/process.js b/lib/launchers/process.js
index e079a53af..97f137aa0 100644
--- a/lib/launchers/process.js
+++ b/lib/launchers/process.js
@@ -2,10 +2,10 @@ var path = require('path')
 var log = require('../logger').create('launcher')
 var env = process.env
 
-var ProcessLauncher = function (spawn, tempDir, timer) {
+var ProcessLauncher = function (spawn, tempDir, timer, processKillTimeout) {
   var self = this
   var onExitCallback
-  var killTimeout = 2000
+  var killTimeout = processKillTimeout
 
   this._tempDir = tempDir.getPath('/karma-' + this.id.toString())
 
@@ -134,7 +134,7 @@ var ProcessLauncher = function (spawn, tempDir, timer) {
 }
 
 ProcessLauncher.decoratorFactory = function (timer) {
-  return function (launcher) {
+  return function (launcher, processKillTimeout) {
     var spawn = require('child_process').spawn
 
     var spawnWithoutOutput = function () {
@@ -145,7 +145,7 @@ ProcessLauncher.decoratorFactory = function (timer) {
       return proc
     }
 
-    ProcessLauncher.call(launcher, spawnWithoutOutput, require('../temp_dir'), timer)
+    ProcessLauncher.call(launcher, spawnWithoutOutput, require('../temp_dir'), timer, processKillTimeout)
   }
 }