diff --git a/bin/addons/base/ir/ir_model.py b/bin/addons/base/ir/ir_model.py
index aa89e0f71dd..e88e9ae2815 100644
--- a/bin/addons/base/ir/ir_model.py
+++ b/bin/addons/base/ir/ir_model.py
@@ -71,6 +71,11 @@ class ir_model(osv.osv):
         pooler.restart_pool(cr.dbname)
         return res
 
+    def write(self, cr, user, ids, vals, context=None):
+        if context:
+            del context['__last_update']
+        return super(ir_model,self).write(cr, user, ids, vals, context)
+
     def create(self, cr, user, vals, context=None):
         if context and context.get('manual',False):
             vals['state']='manual'