diff --git a/install-dev/data/xml/hook.xml b/install-dev/data/xml/hook.xml
index 1139431f2..005284227 100644
--- a/install-dev/data/xml/hook.xml
+++ b/install-dev/data/xml/hook.xml
@@ -86,7 +86,7 @@
       <name>displayCustomerAccount</name><title>Customer account displayed in Front Office</title><description>This hook displays new elements on the customer account page</description>
     </hook>
     <hook id="actionOrderSlipAdd" live_edit="0">
-      <name>actionOrderSlipAdd</name><title>Order slip creation</title><description>This hook is called when a product's quantity is modified</description>
+      <name>actionOrderSlipAdd</name><title>Order slip creation</title><description>This hook is called when a new credit slip is added regarding client order</description>
     </hook>
     <hook id="displayProductTab" live_edit="0">
       <name>displayProductTab</name><title>Tabs on product page</title><description>This hook is called on the product page's tab</description>
diff --git a/install-dev/upgrade/sql/1.5.5.0.sql b/install-dev/upgrade/sql/1.5.5.0.sql
index 934492867..152e75ea9 100644
--- a/install-dev/upgrade/sql/1.5.5.0.sql
+++ b/install-dev/upgrade/sql/1.5.5.0.sql
@@ -24,3 +24,5 @@ ALTER TABLE `PREFIX_log` ADD `id_employee` INT(10) UNSIGNED NULL AFTER `object_i
 
 SET @id_parent = (SELECT IFNULL(id_tab, 1) FROM `PREFIX_tab` WHERE `class_name` = 'AdminPriceRule' LIMIT 1);
 UPDATE `PREFIX_tab` SET id_parent = @id_parent WHERE `id_parent` = 1 AND `class_name` = 'AdminMarketing' LIMIT 1;
+
+UPDATE `PREFIX_hook` SET `description` = 'This hook is called when a new credit slip is added regarding client order' WHERE `name` = 'actionOrderSlipAdd';
\ No newline at end of file