diff --git a/addons/document/document.py b/addons/document/document.py
index 1671b6bc1ba..6cb2cabbf38 100644
--- a/addons/document/document.py
+++ b/addons/document/document.py
@@ -117,22 +117,8 @@ class document_file(osv.osv):
         # take partner from uid
         if vals.get('res_id', False) and vals.get('res_model', False) and not vals.get('partner_id', False):
             vals['partner_id'] = self.__get_partner_id(cr, uid, vals['res_model'], vals['res_id'], context)
-        if vals.get('datas', False):
-            vals['file_type'], vals['index_content'] = self._index(cr, uid, vals['datas'].decode('base64'), vals.get('datas_fname', False), None)
         return super(document_file, self).create(cr, uid, vals, context)
 
-    def write(self, cr, uid, ids, vals, context=None):
-        if context is None:
-            context = {}
-        if vals.get('datas', False):
-            vals['file_type'], vals['index_content'] = self._index(cr, uid, vals['datas'].decode('base64'), vals.get('datas_fname', False), None)
-        return super(document_file, self).write(cr, uid, ids, vals, context)
-
-    def _index(self, cr, uid, data, datas_fname, file_type):
-        mime, icont = cntIndex.doIndex(data, datas_fname,  file_type or None, None)
-        icont_u = ustr(icont)
-        return mime, icont_u
-
     def __get_partner_id(self, cr, uid, res_model, res_id, context=None):
         """ A helper to retrieve the associated partner from any res_model+id
             It is a hack that will try to discover if the mentioned record is
diff --git a/addons/document/document_view.xml b/addons/document/document_view.xml
index 68f294b251c..4c2456de827 100644
--- a/addons/document/document_view.xml
+++ b/addons/document/document_view.xml
@@ -167,7 +167,7 @@
         <field name="inherit_id" ref="base.view_attachment_form"/>
         <field name="arch" type="xml">
             <xpath expr="//field[@name='datas_fname']" position="replace">
-                <field name="datas_fname" invisible="1"/>
+                <field name="datas_fname" invisible="1" on_change="onchange_file(datas_fname)"/>
             </xpath>
             <field name="url" position="after">
                 <field name="user_id"/>