diff --git a/addons/mrp_operations/mrp_operations.py b/addons/mrp_operations/mrp_operations.py
index 885a406fe52..12178cef676 100755
--- a/addons/mrp_operations/mrp_operations.py
+++ b/addons/mrp_operations/mrp_operations.py
@@ -47,12 +47,10 @@ class mrp_production_workcenter_line(osv.osv):
        'date_planned': fields.related('production_id', 'date_planned', string='Date Planned', type="datetime"),
        'date_start': fields.datetime('Start Date'),
        'date_finnished': fields.datetime('End Date'),
-       'delay': fields.char('Delay',size=128,help="This is delay between operation start and stop in this workcenter",readonly=True),
+       'delay': fields.float('Delay',size=128,help="This is delay between operation start and stop in this workcenter",readonly=True),
        'product':fields.related('production_id','product_id',type='many2one',relation='product.product',string='Product'),
        'qty':fields.related('production_id','product_qty',type='float',string='Qty'),
        'uom':fields.related('production_id','product_uom',type='many2one',relation='product.uom',string='UOM'),
-
-
     }
     _defaults = {
         'state': lambda *a: 'draft',
diff --git a/addons/purchase/purchase.py b/addons/purchase/purchase.py
index 4d9e31836ce..942c3f960d9 100644
--- a/addons/purchase/purchase.py
+++ b/addons/purchase/purchase.py
@@ -63,7 +63,7 @@ class purchase_order(osv.osv):
             cur=order.pricelist_id.currency_id
             for line in order.order_line:
                 for c in self.pool.get('account.tax').compute(cr, uid, line.taxes_id, line.price_unit, line.product_qty, order.partner_address_id.id, line.product_id, order.partner_id):
-                    val+= cur_obj.round(cr, uid, cur, c['amount'])
+                    val+= c['amount']
             res[order.id]=cur_obj.round(cr, uid, cur, val)
         return res
 
diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index dd478f3dca1..404946e1f7b 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -79,7 +79,7 @@ class sale_order(osv.osv):
             cur=order.pricelist_id.currency_id
             for line in order.order_line:
                 for c in self.pool.get('account.tax').compute(cr, uid, line.tax_id, line.price_unit * (1-(line.discount or 0.0)/100.0), line.product_uom_qty, order.partner_invoice_id.id, line.product_id, order.partner_id):
-                    val+= cur_obj.round(cr, uid, cur, c['amount'])
+                    val+= c['amount']
             res[order.id]=cur_obj.round(cr, uid, cur, val)
         return res