diff --git a/addons/anonymization/anonymization.py b/addons/anonymization/anonymization.py
index 797a1aed022..6e60b0e6393 100644
--- a/addons/anonymization/anonymization.py
+++ b/addons/anonymization/anonymization.py
@@ -428,7 +428,7 @@ class ir_model_fields_anonymize_wizard(osv.osv_memory):
                     self._raise_after_history_update(cr, uid, history_id, 'Error !', msg)
 
                 if anonymized_value is None:
-                    self._raise_after_history_update(cr, uid, history_id, _('Error !'), _("Anonymized value is None. This cannot happens."))
+                    self._raise_after_history_update(cr, uid, history_id, _('Error !'), _("Anonymized value can not be empty."))
 
                 sql = "update %(table)s set %(field)s = %%(anonymized_value)s where id = %%(id)s" % {
                     'table': table_name,