diff --git a/DependencyInjection/GregwarCaptchaExtension.php b/DependencyInjection/GregwarCaptchaExtension.php
index 05ec528..72f61f8 100755
--- a/DependencyInjection/GregwarCaptchaExtension.php
+++ b/DependencyInjection/GregwarCaptchaExtension.php
@@ -19,14 +19,7 @@ class GregwarCaptchaExtension extends Extension
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);
 
-        $container->setParameter('gregwar_captcha.length', $config['length']);
-        $container->setParameter('gregwar_captcha.height', $config['height']);
-        $container->setParameter('gregwar_captcha.width', $config['width']);
-        $container->setParameter('gregwar_captcha.as_file', $config['as_file']);
-        $container->setParameter('gregwar_captcha.image_folder', $config['image_folder']);
-        $container->setParameter('gregwar_captcha.web_path', $config['web_path']);
-        $container->setParameter('gregwar_captcha.gc_freq', $config['gc_freq']);
-        $container->setParameter('gregwar_captcha.expiration', $config['expiration']);
+        $container->setParameter('gregwar_captcha.config', $config);
 
         $resources = $container->getParameter('twig.form.resources');
         $container->setParameter('twig.form.resources',array_merge(array('GregwarCaptchaBundle::captcha.html.twig'), $resources));
diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index 990e47b..9f91571 100755
--- a/Resources/config/services.yml
+++ b/Resources/config/services.yml
@@ -3,6 +3,6 @@ services:
     # captcha type
     captcha.type:
         class: Gregwar\CaptchaBundle\Type\CaptchaType
-        arguments: [ "@session", %gregwar_captcha.width%, %gregwar_captcha.height%, %gregwar_captcha.length%, %gregwar_captcha.as_file%, %gregwar_captcha.image_folder%, %gregwar_captcha.web_path%, %gregwar_captcha.gc_freq%, %gregwar_captcha.expiration% ]
+        arguments: [ "@session", %gregwar_captcha.config% ]
         tags:
             - { name: form.type, alias: captcha }
diff --git a/Type/CaptchaType.php b/Type/CaptchaType.php
index 0bea461..eb9a8f8 100755
--- a/Type/CaptchaType.php
+++ b/Type/CaptchaType.php
@@ -76,20 +76,25 @@ class CaptchaType extends AbstractType
      */
     protected $session;
 
+    /**
+     * Session key
+     * @var String
+     */
     private $key = 'captcha';
 
 
-    public function __construct(Session $session, $width, $height, $length, $asFile, $imageFolder, $webPath, $gcFreq, $expiration)
+    public function __construct(Session $session, $config)
     {
         $this->session = $session;
-        $this->width = $width;
-        $this->height = $height;
-        $this->length = $length;
-        $this->asFile = $asFile;
-        $this->imageFolder = $imageFolder;
-        $this->webPath = $webPath;
-        $this->gcFreq = $gcFreq;
-        $this->expiration = $expiration;
+
+        $this->width = $config['width'];
+        $this->height = $config['height'];
+        $this->length = $config['length'];
+        $this->asFile = $config['as_file'];
+        $this->imageFolder = $config['image_folder'];
+        $this->webPath = $config['web_path'];
+        $this->gcFreq = $config['gc_freq'];
+        $this->expiration = $config['expiration'];
     }
 
     public function buildForm(FormBuilder $builder, array $options)