diff --git a/addons/product/product.py b/addons/product/product.py
index dec91506883..b20fa7b2bf7 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -992,7 +992,7 @@ class product_supplierinfo(osv.osv):
         'company_id':fields.many2one('res.company','Company',select=1),
     }
     _defaults = {
-        'qty': lambda *a: 0.0,
+        'min_qty': lambda *a: 0.0,
         'sequence': lambda *a: 1,
         'delay': lambda *a: 1,
         'company_id': lambda self,cr,uid,c: self.pool.get('res.company')._company_default_get(cr, uid, 'product.supplierinfo', context=c),
diff --git a/openerp/tests/common.py b/openerp/tests/common.py
index df00e61f140..646856e5f09 100644
--- a/openerp/tests/common.py
+++ b/openerp/tests/common.py
@@ -94,9 +94,10 @@ class TransactionCase(BaseCase):
         TransactionCase.cr = self.cursor()
         TransactionCase.uid = openerp.SUPERUSER_ID
 
-    def tearDown(self):
-        self.cr.rollback()
-        self.cr.close()
+        @self.addCleanup
+        def close_cursor():
+            self.cr.rollback()
+            self.cr.close()
 
 
 class SingleTransactionCase(BaseCase):