diff --git a/test/test_junos_devices_query.py b/test/test_junos_devices_query.py
index 811724c95a80b7b87bafa573638683a7b518a6e0..89865d0843303ae5bc34463da59cb2380d24b6ac 100644
--- a/test/test_junos_devices_query.py
+++ b/test/test_junos_devices_query.py
@@ -48,4 +48,4 @@ def test_router_hostname_derivation(mocked_redis):
     hostnames = list(data.derive_router_hostnames(config))
     assert hostnames  # test data is non-empty
     for h in hostnames:
-        assert re.match(r'^(mx[12]|qfx|srx[12])\..+\.geant\.net$', h)
+        assert re.match(r'^(rt[12]|mx[12]|qfx|srx[12])\..+\.geant\.net$', h)