diff --git a/addons/hr_timesheet/hr_timesheet.py b/addons/hr_timesheet/hr_timesheet.py
index a28508be4db..cd0f873ccfd 100644
--- a/addons/hr_timesheet/hr_timesheet.py
+++ b/addons/hr_timesheet/hr_timesheet.py
@@ -154,7 +154,7 @@ class hr_analytic_timesheet(osv.osv):
         'date': lambda self, cr, uid, ctx: ctx.get('date', fields.date.context_today(self,cr,uid,context=ctx)),
         'user_id': lambda obj, cr, uid, ctx: ctx.get('user_id', uid),
     }
-    def on_change_account_id(self, cr, uid, ids, account_id):
+    def on_change_account_id(self, cr, uid, ids, account_id, user_id):
         return {'value':{}}
 
     def on_change_date(self, cr, uid, ids, date):
diff --git a/addons/hr_timesheet_invoice/hr_timesheet_invoice.py b/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
index b9574b553d1..d4950708294 100644
--- a/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
+++ b/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
@@ -174,7 +174,7 @@ account_analytic_line()
 
 class hr_analytic_timesheet(osv.osv):
     _inherit = "hr.analytic.timesheet"
-    def on_change_account_id(self, cr, uid, ids, account_id):
+    def on_change_account_id(self, cr, uid, ids, account_id, user_id):
         res = {}
         if not account_id:
             return res
diff --git a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
index bec3c641776..887ce15a741 100644
--- a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
+++ b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
@@ -389,7 +389,7 @@ class hr_timesheet_line(osv.osv):
         return True
 
     def multi_on_change_account_id(self, cr, uid, ids, account_ids, context=None):
-        return dict([(el, self.on_change_account_id(cr, uid, ids, el)) for el in account_ids])
+        return dict([(el, self.on_change_account_id(cr, uid, ids, el, context.get('user_id', False) or uid)) for el in account_ids])
 
 
 hr_timesheet_line()