diff --git a/openerp/addons/base/ir/ir_ui_view.py b/openerp/addons/base/ir/ir_ui_view.py
index addd3ddaba2..91785af7664 100644
--- a/openerp/addons/base/ir/ir_ui_view.py
+++ b/openerp/addons/base/ir/ir_ui_view.py
@@ -166,10 +166,12 @@ class view(osv.osv):
     def write(self, cr, uid, ids, vals, context=None):
         if not isinstance(ids, (list, tuple)):
             ids = [ids]
+        if context is None:
+            context = {}
 
         # drop the corresponding view customizations (used for dashboards for example), otherwise
         # not all users would see the updated views
-        custom_view_ids = self.pool.get('ir.ui.view.custom').search(cr, uid, [('ref_id','in',ids)])
+        custom_view_ids = self.pool.get('ir.ui.view.custom').search(cr, uid, [('ref_id', 'in', ids)])
         if custom_view_ids:
             self.pool.get('ir.ui.view.custom').unlink(cr, uid, custom_view_ids)