diff --git a/addons/account/account_analytic_line.py b/addons/account/account_analytic_line.py
index aff75a80192..f9e09ba78ab 100644
--- a/addons/account/account_analytic_line.py
+++ b/addons/account/account_analytic_line.py
@@ -77,7 +77,8 @@ class account_analytic_line(osv.osv):
             unit=False, context=None):
         uom_obj = self.pool.get('product.uom')
         product_obj = self.pool.get('product.product')
-        if unit_amount and prod_id:
+#        if unit_amount and prod_id:
+        if  prod_id:
             prod = product_obj.browse(cr, uid, prod_id)
             a = prod.product_tmpl_id.property_account_expense.id
             if not a:
diff --git a/addons/hr_timesheet/hr_timesheet.py b/addons/hr_timesheet/hr_timesheet.py
index 70d4a80c501..7ceca8495d5 100644
--- a/addons/hr_timesheet/hr_timesheet.py
+++ b/addons/hr_timesheet/hr_timesheet.py
@@ -56,7 +56,8 @@ class hr_analytic_timesheet(osv.osv):
 
     def on_change_unit_amount(self, cr, uid, id, prod_id, unit_amount, unit, context={}):
         res = {}
-        if prod_id and unit_amount:
+#        if prod_id and unit_amount:
+        if prod_id:
             res = self.pool.get('account.analytic.line').on_change_unit_amount(cr, uid, id, prod_id, unit_amount,unit, context)
         return res