diff --git a/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php b/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
index 5fc4595e..056fb06b 100644
--- a/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
+++ b/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
@@ -116,10 +116,14 @@ protected function getCapabilitiesNode()
                 ->arrayNode('proxy')
                     ->children()
                         ->scalarNode('proxyType')->end()
-                        ->scalarNode('proxyAuthconfigUrl')->end()
+                        ->scalarNode('proxyAutoconfigUrl')->end()
                         ->scalarNode('ftpProxy')->end()
                         ->scalarNode('httpProxy')->end()
                         ->scalarNode('sslProxy')->end()
+                        ->scalarNode('socksProxy')->end()
+                        ->scalarNode('socksUsername')->end()
+                        ->scalarNode('socksPassword')->end()
+                        ->scalarNode('noProxy')->end()
                     ->end()
                     ->validate()
                         ->ifTrue(function ($v) {