diff --git a/addons/analytic/analytic.py b/addons/analytic/analytic.py
index 4c883dc4f8a..708f9b3b196 100644
--- a/addons/analytic/analytic.py
+++ b/addons/analytic/analytic.py
@@ -327,7 +327,7 @@ class account_analytic_line(osv.osv):
         'date': fields.date('Date', required=True, select=True),
         'amount': fields.float('Amount', required=True, help='Calculated by multiplying the quantity and the price given in the Product\'s cost price. Always expressed in the company main currency.', digits_compute=dp.get_precision('Account')),
         'unit_amount': fields.float('Quantity', help='Specifies the amount of quantity to count.'),
-        'account_id': fields.many2one('account.analytic.account', 'Analytic Account', required=True, ondelete='set null', select=True, domain=[('type','<>','view')]),
+        'account_id': fields.many2one('account.analytic.account', 'Analytic Account', required=True, ondelete='restrict', select=True, domain=[('type','<>','view')]),
         'user_id': fields.many2one('res.users', 'User'),
         'company_id': fields.related('account_id', 'company_id', type='many2one', relation='res.company', string='Company', store=True, readonly=True),