diff --git a/bin/addons/base/res/partner/partner.py b/bin/addons/base/res/partner/partner.py
index aca486a4d48..34bc285b6f7 100644
--- a/bin/addons/base/res/partner/partner.py
+++ b/bin/addons/base/res/partner/partner.py
@@ -369,7 +369,7 @@ class res_partner_bank(osv.osv):
 
         result = []
         type_ids = bank_type_obj.search(cr, uid, [])
-        bank_types = bank_type_obj.browse(cr, uid, type_ids)
+        bank_types = bank_type_obj.browse(cr, uid, type_ids, context=context)
         for bank_type in bank_types:
             result.append((bank_type.code, bank_type.name))
         return result
diff --git a/bin/osv/expression.py b/bin/osv/expression.py
index 83c1bc693ff..24e2c9a8d33 100644
--- a/bin/osv/expression.py
+++ b/bin/osv/expression.py
@@ -255,9 +255,9 @@ class expression(object):
         else:
             params = []
             if (((right == False) and (type(right)==bool)) or (right is None)) and (operator == '='):
-                query = '%s IS NULL' % left
+                query = '%s.%s IS NULL' % (table._table, left)
             elif (((right == False) and (type(right)==bool)) or right is None) and (operator in ['<>', '!=']):
-                query = '%s IS NOT NULL' % left
+                query = '%s.%s IS NOT NULL' % (table._table, left)
             else:
                 if left == 'id':
                     query = '%s.id %s %%s' % (table._table, operator)