diff --git a/addons/account_analytic_analysis/account_analytic_analysis.py b/addons/account_analytic_analysis/account_analytic_analysis.py
index 15a7e0a5d49..422def483d2 100644
--- a/addons/account_analytic_analysis/account_analytic_analysis.py
+++ b/addons/account_analytic_analysis/account_analytic_analysis.py
@@ -621,7 +621,7 @@ class account_analytic_account(osv.osv):
 
     def onchange_invoice_on_timesheets(self, cr, uid, ids, invoice_on_timesheets, context=None):
         if not invoice_on_timesheets:
-            return {'value': {'use_timesheets':False, 'to_invoice':False}}
+            return {'value': {'to_invoice':False}}
         result = {'value': {'use_timesheets': True}}
         try:
             to_invoice = self.pool.get('ir.model.data').get_object_reference(cr, uid, 'hr_timesheet_invoice', 'timesheet_invoice_factor1')