diff --git a/src/contentbox.php b/src/contentbox.php
index 56ee917..83b43bf 100644
--- a/src/contentbox.php
+++ b/src/contentbox.php
@@ -550,8 +550,8 @@ public function displayForm()
 		}
 		else
 		{
-			Tools::addJs($this->_path.'/js/contentbox.js');
-			Tools::addCss($this->_path.'/css/contentbox.css');
+			Context::getContext()->controller->addJs($this->_path.'/js/contentbox.js');
+			Context::getContext()->controller->addCss($this->_path.'/css/contentbox.css');
 
 		}
 		return $this->_html.$helper->generateForm($fields_form);
@@ -810,4 +810,4 @@ public static function setFiles($files_list = null, $id_store = 1, $id_lang = nu
 
 		return Db::getInstance()->execute( $sql );
 	}
-}
\ No newline at end of file
+}