diff --git a/addons/account/account_invoice.py b/addons/account/account_invoice.py
index f324a07d684..dee2e1dab6e 100644
--- a/addons/account/account_invoice.py
+++ b/addons/account/account_invoice.py
@@ -831,7 +831,7 @@ class account_invoice(osv.osv):
             for tax in inv.tax_line:
                 if tax.manual:
                     continue
-                key = (tax.tax_code_id.id, tax.base_code_id.id, tax.account_id.id, tax.account_analytic_id.id)
+                key = (tax.tax_code_id.id, tax.base_code_id.id, tax.account_id.id)
                 tax_key.append(key)
                 if not key in compute_taxes:
                     raise osv.except_osv(_('Warning!'), _('Global taxes defined, but they are not in invoice lines !'))
@@ -1743,7 +1743,7 @@ class account_invoice_tax(osv.osv):
                     val['account_id'] = tax['account_paid_id'] or line.account_id.id
                     val['account_analytic_id'] = tax['account_analytic_paid_id']
 
-                key = (val['tax_code_id'], val['base_code_id'], val['account_id'], val['account_analytic_id'])
+                key = (val['tax_code_id'], val['base_code_id'], val['account_id'])
                 if not key in tax_grouped:
                     tax_grouped[key] = val
                 else: