diff --git a/neutron_tempest_plugin/common/ip.py b/neutron_tempest_plugin/common/ip.py
index a286d6b..83cd3d9 100644
--- a/neutron_tempest_plugin/common/ip.py
+++ b/neutron_tempest_plugin/common/ip.py
@@ -295,7 +295,7 @@
     for address in list_ip_addresses(addresses=addresses, port=port):
         return address.device.name
 
-    msg = "Port %r fixed IPs not found on server.".format(port['id'])
+    msg = "Port {0!r} fixed IPs not found on server.".format(port['id'])
     raise ValueError(msg)