diff --git a/bt5/erp5_auto_logout/SkinTemplateItem/portal_skins/erp5_auto_logout/setAuthCookie.xml b/bt5/erp5_auto_logout/SkinTemplateItem/portal_skins/erp5_auto_logout/setAuthCookie.xml
index dd68c3a6e01cc216dd900f09d277b6248b835541..e686681bdfccfb82a6984c68e9d3dcfb77953b41 100644
--- a/bt5/erp5_auto_logout/SkinTemplateItem/portal_skins/erp5_auto_logout/setAuthCookie.xml
+++ b/bt5/erp5_auto_logout/SkinTemplateItem/portal_skins/erp5_auto_logout/setAuthCookie.xml
@@ -183,7 +183,7 @@ if expire_interval not in (\'\', None):\n
   expire_time_offset = 0.00069444444444444436 * (expire_interval / 60.0)\n
   ac_expires = DateTime() + expire_time_offset\n
   ac_renew = DateTime() + expire_time_offset / 2\n
-  kw[\'expires\'] = ac_expires.rfc822()\n
+  kw[\'expires\'] = ac_expires.toZone(\'GMT\').rfc822()\n
   # save next \'__ac\' renew time\n
   context.portal_sessions[ac_session_key_pattern %user_name][\'ac_renew\'] = ac_renew.millis()\n
 else:\n
diff --git a/bt5/erp5_auto_logout/bt/revision b/bt5/erp5_auto_logout/bt/revision
index 9a037142aa3c1b4c490e1a38251620f113465330..9d607966b721abde8931ddd052181fae905db503 100644
--- a/bt5/erp5_auto_logout/bt/revision
+++ b/bt5/erp5_auto_logout/bt/revision
@@ -1 +1 @@
-10
\ No newline at end of file
+11
\ No newline at end of file