diff --git a/quantum/agent/ovs_cleanup_util.py b/quantum/agent/ovs_cleanup_util.py
index 46bb3de7f6..ac4f7ee5bb 100644
--- a/quantum/agent/ovs_cleanup_util.py
+++ b/quantum/agent/ovs_cleanup_util.py
@@ -37,8 +37,9 @@ def setup_conf():
     opts = [
         cfg.BoolOpt('ovs_all_ports',
                     default=False,
-                    help='True deletes all ports on the bridge. False deletes '
-                         'those created by Quantum.'),
+                    help='True to delete all ports on all the OpenvSwitch '
+                         'bridges. False to delete ports created by Quantum '
+                         'on integration and external network bridges.')
     ]
 
     conf = cfg.CommonConfigOpts()