diff --git a/product/ERP5/PropertySheet/Comment.py b/product/ERP5/PropertySheet/Comment.py
index 4a2706e5fe652b0832b8d0854be80db21f48091e..d344c9cef79df2b6726b711f29da5b6013ec5521 100644
--- a/product/ERP5/PropertySheet/Comment.py
+++ b/product/ERP5/PropertySheet/Comment.py
@@ -35,6 +35,7 @@ class Comment:
   _properties = (
         {   'id'          : 'comment',
             'description' : 'Comments',
+            'default'     : '',
             'type'        : 'text',
             'mode'        : 'w' },
       )