diff --git a/classes/Pack.php b/classes/Pack.php
index 43d9931f..9d6c6c6d 100755
--- a/classes/Pack.php
+++ b/classes/Pack.php
@@ -174,19 +174,25 @@ class PackCore extends Product
 	}
 
 	/**
-	* Add an item to the pack
-	*
-	* @param integer $id_product
-	* @param integer $id_item
-	* @param integer $qty
-	* @return boolean true if everything was fine
-	*/
+	 * Add an item to the pack
+	 * @param integer $id_product
+	 * @param integer $id_item
+	 * @param integer $qty
+	 * @return boolean true if everything was fine
+	 */
 	public static function addItem($id_product, $id_item, $qty)
 	{
 		Db::getInstance()->Execute('UPDATE '._DB_PREFIX_.'product SET cache_is_pack = 1 WHERE id_product = '.(int)($id_product).' LIMIT 1');
 		return Db::getInstance()->AutoExecute(_DB_PREFIX_.'pack', array('id_product_pack' => (int)($id_product), 'id_product_item' => (int)($id_item), 'quantity' => (int)($qty)), 'INSERT');
 	}
 	
+	/**
+	 * Update item and his pack association
+	 * @param integer $id_product
+	 * @param integer $id_item
+	 * @param integer $qty
+	 * @return boolean true if everything was fine
+	 */
 	public static function updateItem($id_product, $id_item, $qty)
 	{
 		return Db::getInstance()->AutoExecute(_DB_PREFIX_.'pack', array('quantity' => (int)($qty)),