diff --git a/addons/stock/wizard/stock_partial_move.py b/addons/stock/wizard/stock_partial_move.py
index a6e515cd0c4..dafb50cefe1 100644
--- a/addons/stock/wizard/stock_partial_move.py
+++ b/addons/stock/wizard/stock_partial_move.py
@@ -104,7 +104,7 @@ class stock_partial_move(osv.osv_memory):
                     <field name="move%s_product_id" nolabel="1"/>
                     <field name="move%s_product_qty" string="Qty" />
                     <field name="move%s_product_uom" nolabel="1" />
-                    <field name="move%s_prodlot_id" />                    
+                    <field name="move%s_prodlot_id" groups="base.group_extended" />                    
                 """%(m.id, m.id, m.id,m.id)
                 if (m.picking_id.type == 'in') and (m.product_id.cost_method == 'average'):
                     _moves_fields.update({
diff --git a/addons/stock/wizard/stock_partial_picking.py b/addons/stock/wizard/stock_partial_picking.py
index 2d4422986d5..3bfe075eb0b 100644
--- a/addons/stock/wizard/stock_partial_picking.py
+++ b/addons/stock/wizard/stock_partial_picking.py
@@ -105,7 +105,7 @@ class stock_partial_picking(osv.osv_memory):
                         <field name="move%s_product_id" nolabel="1"/>
                         <field name="move%s_product_qty" string="Qty" />
                         <field name="move%s_product_uom" nolabel="1" />
-                        <field name="move%s_prodlot_id" />
+                        <field name="move%s_prodlot_id" groups="base.group_extended" />
                     """%(m.id, m.id, m.id, m.id)
                     if (m.product_id.cost_method == 'average'):
                         _moves_fields.update({