diff --git a/classes/Country.php b/classes/Country.php
index 37cabf7b5..ecee0fcd8 100644
--- a/classes/Country.php
+++ b/classes/Country.php
@@ -92,6 +92,8 @@ class CountryCore extends ObjectModel
 		)
 	);
 
+    protected static $cache_iso_by_id = array();
+
 	protected $webserviceParameters = array(
 		'objectsNodeName' => 'countries',
 		'fields' => array(
@@ -208,13 +210,15 @@ class CountryCore extends ObjectModel
 	*/
 	public static function getIsoById($id_country)
 	{
-		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
-			SELECT `iso_code`
-			FROM `'._DB_PREFIX_.'country`
-			WHERE `id_country` = '.(int)$id_country
-		);
+        if (!isset(Country::$cache_iso_by_id[$id_country]))
+        {
+            Country::$cache_iso_by_id[$id_country] = Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('
+            SELECT `iso_code`
+            FROM `'._DB_PREFIX_.'country`
+            WHERE `id_country` = '.(int)($id_country));
+        }
 
-		return $result['iso_code'];
+		return Country::$cache_iso_by_id[$id_country];
 	}
 
 	/**