diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 33a2220..54a4806 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -37,6 +37,7 @@ public function getConfigTreeBuilder()
                 ->scalarNode('table_prefix')->end()
                 ->scalarNode('wordpress_directory')->end()
                 ->scalarNode('entity_manager')->end()
+                ->booleanNode('load_twig_extension')->defaultFalse()->end()
             ->end()
         ;
 
diff --git a/DependencyInjection/EkinoWordpressExtension.php b/DependencyInjection/EkinoWordpressExtension.php
index 42980fe..10ed1f1 100755
--- a/DependencyInjection/EkinoWordpressExtension.php
+++ b/DependencyInjection/EkinoWordpressExtension.php
@@ -52,7 +52,9 @@ public function load(array $configs, ContainerBuilder $container)
             $this->loadEntityManager($container, $config['entity_manager']);
         }
 
-        $this->loadTwigExtensions($loader);
+        if ($config['load_twig_extension']) {
+            $loader->load('twig.xml');
+        }
     }
 
     /**
@@ -104,18 +106,6 @@ protected function loadEntityManager(ContainerBuilder $container, $em)
         $container->getDefinition('ekino.wordpress.manager.user_meta')->replaceArgument(0, $reference);
     }
 
-    /**
-     * Will load twig extensions if enabled
-     *
-     * @param XmlFileLoader $loader
-     */
-    protected function loadTwigExtensions(XmlFileLoader $loader)
-    {
-        if (class_exists('\Twig_Extension')) {
-            $loader->load('twig.xml');
-        }
-    }
-
     /**
      * Returns bundle alias name
      *
diff --git a/README.md b/README.md
index 0640b41..0585825 100755
--- a/README.md
+++ b/README.md
@@ -67,9 +67,10 @@ Optionnally, you can specify the following options in your `app/config.yml`:
 ekino_wordpress:
     table_prefix: wp_ # If you have a specific Wordpress table prefix
     wordpress_directory: /my/wordpress/directory # If you have a specific Wordpress directory structure
+    load_twig_extension: true # If you want to enable native WordPress functions (ie : get_option() => wp_get_option())
 ```
 
-Also optionnally, if you want to use `UserHook` to authenticate on Symfony, you should add this configuration to your `app/security.yml`:
+Also optionally, if you want to use `UserHook` to authenticate on Symfony, you should add this configuration to your `app/security.yml`:
 
 ```yml
 security:
diff --git a/Twig/Extension/OptionExtension.php b/Twig/Extension/OptionExtension.php
index 3698458..a821d56 100644
--- a/Twig/Extension/OptionExtension.php
+++ b/Twig/Extension/OptionExtension.php
@@ -22,7 +22,7 @@ public function getName()
     /**
      * @param OptionManager $optionManager
      */
-    public function __contruct(OptionManager $optionManager)
+    public function __construct(OptionManager $optionManager)
     {
         $this->optionManager = $optionManager;
     }
@@ -33,7 +33,7 @@ public function __contruct(OptionManager $optionManager)
     public function getFunctions()
     {
         return array(
-            new \Twig_SimpleFunction('get_option', array($this, 'getOption')),
+            new \Twig_SimpleFunction('wp_get_option', array($this, 'getOption')),
         );
     }