fix node roles
diff --git a/tcp_tests/settings_oslo.py b/tcp_tests/settings_oslo.py
index 5ba6602..7e8490d 100644
--- a/tcp_tests/settings_oslo.py
+++ b/tcp_tests/settings_oslo.py
@@ -51,8 +51,8 @@
}, ...]""", default=[]),
ct.Cfg('roles', ct.JSONList(),
help="Node roles managed by underlay in the environment",
- default=[ext.UNDERLAY_NODE_ROLE.salt_master,
- ext.UNDERLAY_NODE_ROLE.salt_minion, ]),
+ default=[ext.UNDERLAY_NODE_ROLES.salt_master,
+ ext.UNDERLAY_NODE_ROLES.salt_minion, ]),
ct.Cfg('nameservers', ct.JSONList(),
help="IP addresses of DNS servers",
default=[]),