diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index 7eb1ed88d24..c756bf05128 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -761,6 +761,23 @@ class procurement_order(osv.osv):
         res = res.values()
         return len(res) and res[0] or 0 #TO CHECK: why workflow is generated error if return not integer value
 
+    def create_procurement_purchase_order(self, cr, uid, procurement, po_vals, line_vals, context=None):
+        """Create the purchase order from the procurement, using
+           the provided field values, after adding the given purchase
+           order line in the purchase order.
+
+           :params procurement: the procurement object generating the purchase order
+           :params dict po_vals: field values for the new purchase order (the
+                                 ``order_line`` field will be overwritten with one
+                                 single line, as passed in ``line_vals``).
+           :params dict line_vals: field values of the single purchase order line that
+                                   the purchase order will contain.
+           :return: id of the newly created purchase order
+           :rtype: int
+        """
+        po_vals.update({'order_line': [(0,0,line_vals)]})
+        return self.pool.get('purchase.order').create(cr, uid, po_vals, context=context)
+
     def make_po(self, cr, uid, ids, context=None):
         """ Make purchase order from procurement
         @return: New created Purchase Orders procurement wise
@@ -774,7 +791,6 @@ class procurement_order(osv.osv):
         pricelist_obj = self.pool.get('product.pricelist')
         prod_obj = self.pool.get('product.product')
         acc_pos_obj = self.pool.get('account.fiscal.position')
-        po_obj = self.pool.get('purchase.order')
         for procurement in self.browse(cr, uid, ids, context=context):
             res_id = procurement.move_id.id
             partner = procurement.product_id.seller_id # Taken Main Supplier of Product of Procurement.
@@ -799,8 +815,10 @@ class procurement_order(osv.osv):
             context.update({'lang': partner.lang, 'partner_id': partner_id})
 
             product = prod_obj.browse(cr, uid, procurement.product_id.id, context=context)
+            taxes_ids = procurement.product_id.product_tmpl_id.supplier_taxes_id
+            taxes = acc_pos_obj.map_tax(cr, uid, partner.property_account_position, taxes_ids)
 
-            line = {
+            line_vals = {
                 'name': product.partner_ref,
                 'product_qty': qty,
                 'product_id': procurement.product_id.id,
@@ -809,25 +827,20 @@ class procurement_order(osv.osv):
                 'date_planned': newdate.strftime('%Y-%m-%d %H:%M:%S'),
                 'move_dest_id': res_id,
                 'notes': product.description_purchase,
+                'taxes_id': [(6,0,taxes)],
             }
 
-            taxes_ids = procurement.product_id.product_tmpl_id.supplier_taxes_id
-            taxes = acc_pos_obj.map_tax(cr, uid, partner.property_account_position, taxes_ids)
-            line.update({
-                'taxes_id': [(6,0,taxes)]
-            })
-            purchase_id = po_obj.create(cr, uid, {
+            po_vals = {
                 'origin': procurement.origin,
                 'partner_id': partner_id,
                 'partner_address_id': address_id,
                 'location_id': procurement.location_id.id,
                 'pricelist_id': pricelist_id,
-                'order_line': [(0,0,line)],
                 'company_id': procurement.company_id.id,
                 'fiscal_position': partner.property_account_position and partner.property_account_position.id or False
-            })
-            res[procurement.id] = purchase_id
-            self.write(cr, uid, [procurement.id], {'state': 'running', 'purchase_id': purchase_id})
+            }
+            res[procurement.id] = self.create_procurement_purchase_order(cr, uid, procurement, po_vals, line_vals, context=context)
+            self.write(cr, uid, [procurement.id], {'state': 'running', 'purchase_id': res[procurement.id]})
         return res
 
 procurement_order()