diff --git a/classes/Product.php b/classes/Product.php
index 0c18df07c..248c7ad6a 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -2408,6 +2408,7 @@ class ProductCore extends ObjectModel
 								'.Shop::addSqlAssociation('product_attribute', 'pa').'
 								WHERE pa.id_product = '.(int)$id_product.'
 								AND product_attribute_shop.default_on = 1
+								GROUP BY pa.id_product_attribute
 							),
 							0
 						) AS attribute_price'