diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index a423810..5faab84 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, @service_container]
+        arguments: [@session, %gregwar_captcha.image.width%, %gregwar_captcha.image.height%]
         tags:
             - { name: form.type, alias: captcha }
diff --git a/Type/CaptchaType.php b/Type/CaptchaType.php
index 48a4d79..7980e27 100755
--- a/Type/CaptchaType.php
+++ b/Type/CaptchaType.php
@@ -21,18 +21,18 @@ use Gregwar\CaptchaBundle\Generator\CaptchaGenerator;
  */
 class CaptchaType extends AbstractType
 {
-    /**
-     * The image height
-     * @var integer
-     */
-    protected $height;
-    
     /**
      * The image width
      * @var integer
      */
     protected $width;
 
+    /**
+     * The image height
+     * @var integer
+     */
+    protected $height;
+
     /** 
      * The session
      * @var Symfony\Component\HttpFoundation\Session
@@ -42,11 +42,11 @@ class CaptchaType extends AbstractType
     private $key = 'captcha';
 
 
-    public function __construct(Session $session, ContainerInterface $container)
+    public function __construct(Session $session, $width, $height)
     {
         $this->session = $session;
-        $this->height = $container->getParameter('gregwar_captcha.image.height');
-        $this->width  = $container->getParameter('gregwar_captcha.image.width');
+        $this->width = $width;
+        $this->height = $height;
         
     }
 
@@ -64,7 +64,20 @@ class CaptchaType extends AbstractType
         $view->set('captcha_code', $generator->getCode($this->width, $this->height));
         $view->set('captcha_width', $this->width);
         $view->set('captcha_height', $this->height);
-    }    
+    }
+
+    public function getDefaultOptions(array $options = array()) 
+    {
+        if (isset($options['width'])) {
+            $this->width = $options['width'];
+            $this->height = $options['height'];
+        }
+
+        return array(
+            'width' => $this->width,
+            'height' => $this->height
+        );
+    }
 
     public function getParent(array $options)
     {