diff --git a/karbor/service.py b/karbor/service.py
index 56b1f913..262f018d 100644
--- a/karbor/service.py
+++ b/karbor/service.py
@@ -417,6 +417,7 @@ def wait():
         # hide flag contents from log if contains a password
         # should use secret flag when switch over to openstack-common
         if ("_password" in flag or "_key" in flag or
+                (flag == "transport_url" and "rabbit:" in flag_get) or
                 (flag == "sql_connection" and
                     ("mysql:" in flag_get or "postgresql:" in flag_get))):
             LOG.debug('%s : FLAG SET ', flag)