diff --git a/openerp/addons/base/ir/ir_attachment.py b/openerp/addons/base/ir/ir_attachment.py
index 82ec746ec6b..a4927931d08 100644
--- a/openerp/addons/base/ir/ir_attachment.py
+++ b/openerp/addons/base/ir/ir_attachment.py
@@ -162,9 +162,6 @@ class ir_attachment(osv.osv):
                 result[attach.id] = self._file_read(cr, uid, attach.store_fname, bin_size)
             else:
                 result[attach.id] = attach.db_datas
-                if bin_size:
-                    result[attach.id] = int(result[attach.id] or 0)
-
         return result
 
     def _data_set(self, cr, uid, id, name, value, arg, context=None):
diff --git a/openerp/osv/fields.py b/openerp/osv/fields.py
index b2f71142638..5ef82ed2683 100644
--- a/openerp/osv/fields.py
+++ b/openerp/osv/fields.py
@@ -1069,6 +1069,8 @@ def get_nice_size(value):
         size = value
     elif value: # this is supposed to be a string
         size = len(value)
+        if size < 12:  # suppose human size
+            return value
     return tools.human_size(size)
 
 # See http://www.w3.org/TR/2000/REC-xml-20001006#NT-Char