diff --git a/test/test_msr_routes.py b/test/test_msr_routes.py
index 7fd78dfb966443c3775436999ec441dbbc27e487..15eaa48819568d92f58e0682e0fe4d999c3fc24a 100644
--- a/test/test_msr_routes.py
+++ b/test/test_msr_routes.py
@@ -338,6 +338,17 @@ def test_get_mdvpn_peerings(client, mocked_redis):
     assert response_data  # test data is non-empty
 
 
+@pytest.fixture
+def whois(mocker):
+    check_output = mocker.patch(
+        "inventory_provider.routes.msr.subprocess.check_output"
+    )
+    check_output.return_value = """AS Name
+RCCN Fundacao para a Ciencia e a Tecnologia, I.P., PT""".encode(
+        "utf-8"
+    )
+
+
 @pytest.mark.parametrize('endpoint_variant', [
     "",  # default, no filter
     "/1853",
@@ -348,7 +359,7 @@ def test_get_mdvpn_peerings(client, mocked_redis):
     "/1853?instance=IAS",
     "/1853?group=IAS-NRENS&instance=IAS"
 ])
-def test_get_asn_peers_get(endpoint_variant, client, mocked_redis):
+def test_get_asn_peers_get(endpoint_variant, client, mocked_redis, whois):
     rv = client.get(
         f'/msr/asn-peers{endpoint_variant}',
         headers=DEFAULT_REQUEST_HEADERS
@@ -370,7 +381,7 @@ def test_get_asn_peers_get(endpoint_variant, client, mocked_redis):
     ("/1853", '{"instance": "IAS"}'),
     ("/1853", '{"group": "IAS-NRENS", "instance": "IAS"}')
 ])
-def test_get_asn_peers_post(endpoint_variant, post_body, client, mocked_redis):
+def test_get_asn_peers_post(endpoint_variant, post_body, client, mocked_redis, whois):
     rv = client.post(
         f'/msr/asn-peers{endpoint_variant}',
         headers=DEFAULT_REQUEST_HEADERS,