diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index 9fb0c9b68aa..aef7d98c488 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -730,7 +730,7 @@ class stock_picking(osv.osv):
                 model,view_id = mod_obj.get_object_reference(cr, uid, 'stock', 'view_picking_out_form')
         return super(stock_picking,self).fields_view_get(cr, uid, view_id=view_id, view_type=view_type, context=context, toolbar=toolbar, submenu=submenu)
 
-    def onchange_partner_in(self, cr, uid, context=None, partner_id=None):
+    def onchange_partner_in(self, cr, uid, ids, partner_id=None, context=None):
         return {}
 
     def action_explode(self, cr, uid, moves, context=None):
diff --git a/addons/warning/warning.py b/addons/warning/warning.py
index 9e6c2a0a2b8..f917c039d62 100644
--- a/addons/warning/warning.py
+++ b/addons/warning/warning.py
@@ -149,7 +149,7 @@ account_invoice()
 class stock_picking(osv.osv):
     _inherit = 'stock.picking'
 
-    def onchange_partner_in(self, cr, uid, context, partner_id=None):
+    def onchange_partner_in(self, cr, uid, ids, partner_id=None, context=None):
         if not partner_id:
             return {}
         partner = self.pool.get('res.partner').browse(cr, uid, partner_id, context=context)
@@ -165,7 +165,7 @@ class stock_picking(osv.osv):
                 'title': title,
                 'message': message
             }
-        result =  super(stock_picking, self).onchange_partner_in(cr, uid, context, partner_id)
+        result =  super(stock_picking, self).onchange_partner_in(cr, uid, ids, partner_id, context)
         if result.get('warning',False):
             warning['title'] = title and title +' & '+ result['warning']['title'] or result['warning']['title']
             warning['message'] = message and message + ' ' + result['warning']['message'] or result['warning']['message']
@@ -179,7 +179,7 @@ stock_picking()
 class stock_picking_in(osv.osv):
     _inherit = 'stock.picking.in'
 
-    def onchange_partner_in(self, cr, uid, context, partner_id=None):
+    def onchange_partner_in(self, cr, uid, ids, partner_id=None, context=None):
         if not partner_id:
             return {}
         partner = self.pool.get('res.partner').browse(cr, uid, partner_id, context=context)
@@ -195,7 +195,7 @@ class stock_picking_in(osv.osv):
                 'title': title,
                 'message': message
             }
-        result =  super(stock_picking_in, self).onchange_partner_in(cr, uid, context, partner_id)
+        result =  super(stock_picking_in, self).onchange_partner_in(cr, uid, ids, partner_id, context)
         if result.get('warning',False):
             warning['title'] = title and title +' & '+ result['warning']['title'] or result['warning']['title']
             warning['message'] = message and message + ' ' + result['warning']['message'] or result['warning']['message']
@@ -205,7 +205,7 @@ class stock_picking_in(osv.osv):
 class stock_picking_out(osv.osv):
     _inherit = 'stock.picking.out'
 
-    def onchange_partner_in(self, cr, uid, context, partner_id=None):
+    def onchange_partner_in(self, cr, uid, ids, partner_id=None, context=None):
         if not partner_id:
             return {}
         partner = self.pool.get('res.partner').browse(cr, uid, partner_id, context=context)
@@ -221,7 +221,7 @@ class stock_picking_out(osv.osv):
                 'title': title,
                 'message': message
             }
-        result =  super(stock_picking_out, self).onchange_partner_in(cr, uid, context, partner_id)
+        result =  super(stock_picking_out, self).onchange_partner_in(cr, uid, ids, partner_id, context)
         if result.get('warning',False):
             warning['title'] = title and title +' & '+ result['warning']['title'] or result['warning']['title']
             warning['message'] = message and message + ' ' + result['warning']['message'] or result['warning']['message']