diff --git a/openerp/addons/base/module/wizard/base_module_upgrade.py b/openerp/addons/base/module/wizard/base_module_upgrade.py
index 5104e94a720..5d0bd0f79d0 100644
--- a/openerp/addons/base/module/wizard/base_module_upgrade.py
+++ b/openerp/addons/base/module/wizard/base_module_upgrade.py
@@ -81,8 +81,9 @@ class base_module_upgrade(osv.osv_memory):
                 raise UserError(_('Following modules are not installed or unknown: %s') % ('\n\n' + '\n'.join(unmet_packages)))
 
             ir_module.download(cr, uid, ids, context=context)
-            cr.commit() # save before re-creating cursor below
 
+        # terminate transaction before re-creating cursor below
+        cr.commit()
         openerp.api.Environment.reset()
         openerp.modules.registry.RegistryManager.new(cr.dbname, update_module=True)