diff --git a/classes/Search.php b/classes/Search.php
index 1c9bbd68b..ca3414dd4 100644
--- a/classes/Search.php
+++ b/classes/Search.php
@@ -281,6 +281,8 @@ class SearchCore
 		$alias = '';
 		if ($order_by == 'price')
 			$alias = 'product_shop.';
+		else if ($order_by == 'date_upd')
+			$alias = 'p.';
 		$sql = 'SELECT p.*, product_shop.*, stock.out_of_stock, IFNULL(stock.quantity, 0) as quantity, 
 				pl.`description_short`, pl.`available_now`, pl.`available_later`, pl.`link_rewrite`, pl.`name`,
 			 MAX(image_shop.`id_image`) id_image, il.`legend`, m.`name` manufacturer_name '.$score.', MAX(product_attribute_shop.`id_product_attribute`) id_product_attribute,