diff --git a/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php b/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
index fcdcebaf..04e136b2 100644
--- a/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
+++ b/src/Behat/MinkExtension/ServiceContainer/Driver/Selenium2Factory.php
@@ -111,6 +111,7 @@ protected function getCapabilitiesNode()
                 ->booleanNode('webStorageEnabled')->end()
                 ->booleanNode('rotatable')->end()
                 ->booleanNode('acceptSslCerts')->end()
+                ->booleanNode('acceptInsecureCerts')->end()
                 ->booleanNode('nativeEvents')->end()
                 ->booleanNode('overlappingCheckDisabled')->end()
                 ->arrayNode('proxy')