diff --git a/product/ERP5Form/MultiRelationField.py b/product/ERP5Form/MultiRelationField.py
index e230f2694605983e8b93884f4f956130ceca977b..611c0706bf3a5307b1f0731c6c088e0d8a559b31 100644
--- a/product/ERP5Form/MultiRelationField.py
+++ b/product/ERP5Form/MultiRelationField.py
@@ -42,6 +42,9 @@ from Globals import get_request
 from AccessControl import Unauthorized
 from AccessControl import getSecurityManager
 
+# a marker function for translation.
+N_ = lambda msg, **kw: str(Message('erp5_ui', msg, **kw))
+
 # Max. number of catalog result
 MAX_SELECT = 30
 NEW_CONTENT_PREFIX = '_newContent_'
@@ -556,12 +559,10 @@ class MultiRelationStringFieldValidator(Validator.LinesValidator):
             # form is not validated
             ##############################
             portal_type = relation_uid[len(NEW_CONTENT_PREFIX):]
-            translated_portal_type = Message(domain='erp5_ui',
-                                             message=portal_type)
+            translated_portal_type = N_(portal_type)
             # XXX Replace New by Add
-            message = Message(
-                    domain='erp5_ui', message='New ${portal_type}',
-                    mapping={'portal_type': translated_portal_type})
+            message = N_('New ${portal_type}',
+                         mapping={'portal_type': translated_portal_type})
             display_text = message
           else:
             display_text = 'Object has been deleted'
@@ -653,11 +654,9 @@ class MultiRelationStringFieldValidator(Validator.LinesValidator):
                   # form is not validated
                   ##############################
                   portal_type = relation_uid[len(NEW_CONTENT_PREFIX):]
-                  translated_portal_type = Message(domain='erp5_ui',
-                                                   message=portal_type)
-                  message = Message(
-                          domain='erp5_ui', message='New ${portal_type}',
-                          mapping={'portal_type': translated_portal_type})
+                  translated_portal_type = N_(portal_type)
+                  message = N_('New ${portal_type}',
+                               mapping={'portal_type': translated_portal_type})
                   display_text = message
                 else:
                   display_text = 'Object has been deleted'
@@ -736,11 +735,9 @@ class MultiRelationStringFieldValidator(Validator.LinesValidator):
                       pass
                     else:
                       if portal_type in module.getVisibleAllowedContentTypeList():
-                        translated_portal_type = Message(domain='erp5_ui',
-                                                         message=portal_type)
-                        message = Message(
-                                domain='erp5_ui', message='Add ${portal_type}',
-                                mapping={'portal_type': translated_portal_type})
+                        translated_portal_type = N_(portal_type)
+                        message = N_('Add ${portal_type}',
+                                     mapping={'portal_type':translated_portal_type})
                         menu_item_list.append((message, 
                                                '%s%s' % (NEW_CONTENT_PREFIX, 
                                                          portal_type)))
diff --git a/product/ERP5Form/SelectionTool.py b/product/ERP5Form/SelectionTool.py
index f516adac4fc16e0f7982458f73e395dd8cf03d7c..71a35df40f37fa2a6177bb74debeabe306598f82 100644
--- a/product/ERP5Form/SelectionTool.py
+++ b/product/ERP5Form/SelectionTool.py
@@ -46,6 +46,9 @@ from Acquisition import aq_base
 from Products.ERP5Type.Message import Message
 import warnings
 
+# a marker function for translation.
+N_ = lambda msg, **kw: str(Message('erp5_ui', msg, **kw))
+
 _MARKER = []
 
 class SelectionError( Exception ):
@@ -1112,12 +1115,9 @@ class SelectionTool( BaseTool, UniqueObject, SimpleItem ):
           if len(field_value) > 1 and isinstance(field_value, type([])):
             field_value = ' OR '.join(field_value)
           REQUEST.form[field_key] = field_value
-          portal_status_message = Message(
-                          domain='erp5_ui',
-                          message="Please select one (or more) object.")
+          portal_status_message = N_("Please select one (or more) object.")
         else:
-          portal_status_message = Message(domain='erp5_ui',
-                                          message="Please select one object.")
+          portal_status_message = N_("Please select one object.")
 
 
         # Save the current REQUEST form