diff --git a/bt5/erp5_upgrader/SkinTemplateItem/portal_skins/erp5_upgrader/ERP5Site_upgradeSkinCache.xml b/bt5/erp5_upgrader/SkinTemplateItem/portal_skins/erp5_upgrader/ERP5Site_upgradeSkinCache.xml
index 06761471d5f479d564ba1b96e1632f7aace30c24..1fa148ba7845e52d41c6e13345290b1d3f1e0f6d 100644
--- a/bt5/erp5_upgrader/SkinTemplateItem/portal_skins/erp5_upgrader/ERP5Site_upgradeSkinCache.xml
+++ b/bt5/erp5_upgrader/SkinTemplateItem/portal_skins/erp5_upgrader/ERP5Site_upgradeSkinCache.xml
@@ -53,7 +53,7 @@
             <value> <string># By default, there are three cache_managers, http_cache and anonymous_http_cache and user_ram_cache.\n
 cache_manager_id = \'http_cache\'\n
 message_list = []\n
-return type(upgrade)\n
+\n
 def setCache(skin):\n
   for o in skin.objectValues():\n
     id = o.id\n
diff --git a/bt5/erp5_upgrader/bt/revision b/bt5/erp5_upgrader/bt/revision
index 25802a20038d64f3d8a67c217ce49cac10c4fc33..995fb338a8d0db69b3a4be8d7c3c1c0a2d52dbfc 100644
--- a/bt5/erp5_upgrader/bt/revision
+++ b/bt5/erp5_upgrader/bt/revision
@@ -1 +1 @@
-592
\ No newline at end of file
+593
\ No newline at end of file