diff --git a/addons/account/invoice.py b/addons/account/invoice.py
index d9f54bcdac3..5b96d44135f 100644
--- a/addons/account/invoice.py
+++ b/addons/account/invoice.py
@@ -284,7 +284,7 @@ class account_invoice(osv.osv):
         'reference_type': lambda *a: 'none',
     }
 
-    def unlink(self, cr, uid, ids):
+    def unlink(self, cr, uid, ids, context=None):
         invoices = self.read(cr, uid, ids, ['state'])
         unlink_ids = []
         for t in invoices:
@@ -292,7 +292,7 @@ class account_invoice(osv.osv):
                 unlink_ids.append(t['id'])
             else:
                 raise osv.except_osv(_('Invalid action !'), _('Cannot delete invoice(s) which are already opened or paid !'))
-        osv.osv.unlink(self, cr, uid, unlink_ids)
+        osv.osv.unlink(self, cr, uid, unlink_ids, context=context)
         return True
 
 #   def get_invoice_address(self, cr, uid, ids):
diff --git a/addons/account_voucher/voucher.py b/addons/account_voucher/voucher.py
index 423cf911632..d5a4f987562 100755
--- a/addons/account_voucher/voucher.py
+++ b/addons/account_voucher/voucher.py
@@ -173,7 +173,7 @@ class account_voucher(osv.osv):
         return True
 
     
-    def unlink(self, cr, uid, ids):
+    def unlink(self, cr, uid, ids, context=None):
         vouchers = self.read(cr, uid, ids, ['state'])
         unlink_ids = []
         for t in vouchers:
@@ -181,7 +181,7 @@ class account_voucher(osv.osv):
                 unlink_ids.append(t['id'])
             else:
                 raise osv.except_osv('Invalid action !', 'Cannot delete invoice(s) which are already opened or paid !')
-        osv.osv.unlink(self, cr, uid, unlink_ids)
+        osv.osv.unlink(self, cr, uid, unlink_ids, context=context)
         return True
     
 
diff --git a/addons/mrp/mrp.py b/addons/mrp/mrp.py
index f9f78c49083..ef73e0ff540 100644
--- a/addons/mrp/mrp.py
+++ b/addons/mrp/mrp.py
@@ -437,7 +437,7 @@ class mrp_production(osv.osv):
         'name': lambda x,y,z,c: x.pool.get('ir.sequence').get(y,z,'mrp.production') or '/',
     }
     _order = 'date_planned asc, priority desc';
-    def unlink(self, cr, uid, ids):
+    def unlink(self, cr, uid, ids, context=None):
         productions = self.read(cr, uid, ids, ['state'])
         unlink_ids = []
         for s in productions:
@@ -445,7 +445,7 @@ class mrp_production(osv.osv):
                 unlink_ids.append(s['id'])
             else:
                 raise osv.except_osv(_('Invalid action !'), _('Cannot delete Production Order(s) which are in %s State!' % s['state']))
-        return osv.osv.unlink(self, cr, uid, unlink_ids)
+        return osv.osv.unlink(self, cr, uid, unlink_ids, context=context)
 
     def location_id_change(self, cr, uid, ids, src, dest, context={}):
         if dest:
@@ -796,7 +796,7 @@ class mrp_procurement(osv.osv):
         'procure_method': lambda *a: 'make_to_order',
     }
 
-    def unlink(self, cr, uid, ids):
+    def unlink(self, cr, uid, ids, context=None):
         procurements = self.read(cr, uid, ids, ['state'])
         unlink_ids = []
         for s in procurements:
@@ -804,7 +804,7 @@ class mrp_procurement(osv.osv):
                 unlink_ids.append(s['id'])
             else:
                 raise osv.except_osv(_('Invalid action !'), _('Cannot delete Procurement Order(s) which are in %s State!' % s['state']))
-        return osv.osv.unlink(self, cr, uid, unlink_ids)
+        return osv.osv.unlink(self, cr, uid, unlink_ids, context=context)
 
     def onchange_product_id(self, cr, uid, ids, product_id, context={}):
         if product_id:
diff --git a/addons/project_timesheet/project_timesheet.py b/addons/project_timesheet/project_timesheet.py
index 0472d77d4e5..37e238edab0 100644
--- a/addons/project_timesheet/project_timesheet.py
+++ b/addons/project_timesheet/project_timesheet.py
@@ -95,7 +95,7 @@ class project_work(osv.osv):
         # delete entry from timesheet too while deleting entry to task.
         list_avail_ids = self.pool.get('hr.analytic.timesheet').search(cr, uid, [])
         if timesheet_id in list_avail_ids:
-            obj = self.pool.get('hr.analytic.timesheet').unlink(cr, uid, [timesheet_id], *args)
+            obj = self.pool.get('hr.analytic.timesheet').unlink(cr, uid, [timesheet_id], *args, **kwargs)
 
         return super(project_work,self).unlink(cr, uid, ids, *args, **kwargs)
 
diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 58852e00d8b..4e3d384a057 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -268,7 +268,7 @@ class sale_order(osv.osv):
     _order = 'name desc'
 
     # Form filling
-    def unlink(self, cr, uid, ids):
+    def unlink(self, cr, uid, ids, context=None):
         sale_orders = self.read(cr, uid, ids, ['state'])
         unlink_ids = []
         for s in sale_orders:
@@ -276,7 +276,7 @@ class sale_order(osv.osv):
                 unlink_ids.append(s['id'])
             else:
                 raise osv.except_osv(_('Invalid action !'), _('Cannot delete Sale Order(s) which are already confirmed !'))
-        return osv.osv.unlink(self, cr, uid, unlink_ids)
+        return osv.osv.unlink(self, cr, uid, unlink_ids, context=context)
 
 
     def onchange_shop_id(self, cr, uid, ids, shop_id):
diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index 368591c94a2..8282cbede23 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -307,7 +307,7 @@ class stock_tracking(osv.osv):
         res = [(r['id'], r['name']+' ['+(r['serial'] or '')+']') for r in self.read(cr, uid, ids, ['name','serial'], context)]
         return res
 
-    def unlink(self, cr ,uid, ids):
+    def unlink(self, cr ,uid, ids, context=None):
         raise osv.except_osv(_('Error'), _('You can not remove a lot line !'))
 stock_tracking()