diff --git a/htdocs/webservices/server_productorservice.php b/htdocs/webservices/server_productorservice.php
index a98d8b2a6cd..61bdd03c023 100644
--- a/htdocs/webservices/server_productorservice.php
+++ b/htdocs/webservices/server_productorservice.php
@@ -1015,7 +1015,7 @@ function getListOfProductsOrServices($authentication, $filterproduct)
  *
  * @param	array		$authentication		Array of authentication information
  * @param	array		$id					Category id
- * @param	$lang		$lang				Force lang
+ * @param	Translate	$lang				Force lang
  * @return	array							Array result
  */
 function getProductsForCategory($authentication, $id, $lang = '')