diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/submitted.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/submitted.xml
index 5b361e4683d3adcc98262e6382ededff2508a86d..170bf88612b191a56efe93ab63cf5c0a121aca1a 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/submitted.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/submitted.xml
@@ -98,6 +98,7 @@
                     <key> <string>Modify portal content</string> </key>
                     <value>
                       <tuple>
+                        <string>Assignee</string>
                         <string>Assignor</string>
                         <string>Manager</string>
                       </tuple>
diff --git a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/validated.xml b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/validated.xml
index 5b070bcd0af156ce264b0ecdb3118aed36bc2f10..19b311a5334d5b85f63a263ae1694877b9bed487 100644
--- a/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/validated.xml
+++ b/bt5/erp5_base/WorkflowTemplateItem/portal_workflow/notification_message_workflow/states/validated.xml
@@ -96,6 +96,8 @@
                     <key> <string>Modify portal content</string> </key>
                     <value>
                       <tuple>
+                        <string>Assignee</string>
+                        <string>Assignor</string>
                         <string>Manager</string>
                       </tuple>
                     </value>
diff --git a/bt5/erp5_base/bt/change_log b/bt5/erp5_base/bt/change_log
index 3d536490af0a5e2051de21cc6111f15a6cf05d3e..349d891c5c01547a04c7f852199dffc8c55952a2 100644
--- a/bt5/erp5_base/bt/change_log
+++ b/bt5/erp5_base/bt/change_log
@@ -1,5 +1,6 @@
 2008-08-07 yusei
 * Added proxy role to NotificationTool_getDocumentValue, otherwise Anonymous use can't use notification message.
+* Updated notification_message_workflow and allow modification even if state is submitted or validated.
 
 2008-08-05 yusei
 * Remove subject field from NotificationMessage_view. It was useless.
diff --git a/bt5/erp5_base/bt/revision b/bt5/erp5_base/bt/revision
index 5587802b4e488e50d8c558c30f51fd77fa0708d8..7b89b2202c953386efdf6390320429ff42de30a2 100644
--- a/bt5/erp5_base/bt/revision
+++ b/bt5/erp5_base/bt/revision
@@ -1 +1 @@
-405
\ No newline at end of file
+406
\ No newline at end of file