diff --git a/classes/SpecificPrice.php b/classes/SpecificPrice.php
index d9b738bb2..cada92a5d 100644
--- a/classes/SpecificPrice.php
+++ b/classes/SpecificPrice.php
@@ -345,7 +345,7 @@ class SpecificPriceCore extends ObjectModel
 		if (!SpecificPrice::isFeatureActive())
 			return array();
 
-		$results = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
+		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
 			SELECT `id_product`, `id_product_attribute`
 			FROM `'._DB_PREFIX_.'specific_price`
 			WHERE	`id_shop` IN(0, '.(int)$id_shop.') AND
@@ -361,9 +361,9 @@ class SpecificPriceCore extends ObjectModel
 					)
 					AND
 					`reduction` > 0
-		');
+		', false);
 		$ids_product = array();
-		foreach ($results as $row)
+		while ($row = Db::getInstance()->nextRow($result))
 			$ids_product[] = $with_combination_id ? array('id_product' => (int)$row['id_product'], 'id_product_attribute' => (int)$row['id_product_attribute']) : (int)$row['id_product'];
 		return $ids_product;
 	}