diff --git a/quantumclient/quantum/v2_0/port.py b/quantumclient/quantum/v2_0/port.py
index 1c1c91045..343497c51 100644
--- a/quantumclient/quantum/v2_0/port.py
+++ b/quantumclient/quantum/v2_0/port.py
@@ -109,7 +109,7 @@ class CreatePort(CreateCommand):
             '--device_id',
             help=argparse.SUPPRESS)
         parser.add_argument(
-            '--fixed-ip',
+            '--fixed-ip', metavar='ip_address=IP_ADDR',
             action='append',
             help='desired IP for this port: '
             'subnet_id=<name_or_id>,ip_address=<ip>, '