diff --git a/bin/osv/osv.py b/bin/osv/osv.py
index 6f85cd6d2ca..5f583b894c9 100644
--- a/bin/osv/osv.py
+++ b/bin/osv/osv.py
@@ -132,7 +132,7 @@ class osv_pool(netsvc.Service):
                     raise except_osv('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
                 res = pool.execute_cr(cr, uid, obj, method, *args, **kw)
                 if res is None:
-                    self.logger.warning('RPC methods cannot return `None` at the moment!')
+                    self.logger.warning('The method %s of the object %s can not return `None` at the moment!', method, obj )
                 cr.commit()
             except Exception:
                 cr.rollback()