diff --git a/classes/Link.php b/classes/Link.php
index 3ecdabcb6..b39977aff 100644
--- a/classes/Link.php
+++ b/classes/Link.php
@@ -102,8 +102,8 @@ class LinkCore
 		{
 			if (is_array($product) && isset($product['id_product']))
 				$product = new Product($product['id_product'], false, $id_lang);
-			else if (is_numeric($product) || !$product)
-				$product = new Product($product, false, $id_lang);
+			elseif ((int)$product)
+				$product = new Product((int)$product, false, $id_lang);
 			else
 				throw new PrestaShopException('Invalid product vars');
 		}