diff --git a/addons/account_analytic_analysis/account_analytic_analysis.py b/addons/account_analytic_analysis/account_analytic_analysis.py
index d83db83f9a4..85c00a3f3c4 100644
--- a/addons/account_analytic_analysis/account_analytic_analysis.py
+++ b/addons/account_analytic_analysis/account_analytic_analysis.py
@@ -45,7 +45,7 @@ class account_analytic_invoice_line(osv.osv):
 
     _columns = {
         'product_id': fields.many2one('product.product','Product',required=True),
-        'analytic_account_id': fields.many2one('account.analytic.account', 'Analytic Account'),
+        'analytic_account_id': fields.many2one('account.analytic.account', 'Analytic Account', ondelete='cascade'),
         'name': fields.text('Description', required=True),
         'quantity': fields.float('Quantity', required=True),
         'uom_id': fields.many2one('product.uom', 'Unit of Measure',required=True),