diff --git a/tests/app/authentication/test_authentication.py b/tests/app/authentication/test_authentication.py
index 4c4a34562..c83d8b7d5 100644
--- a/tests/app/authentication/test_authentication.py
+++ b/tests/app/authentication/test_authentication.py
@@ -238,23 +238,31 @@ def test_decode_jwt_token_returns_error_with_no_secrets(client):
     assert exc.value.short_message == "Invalid token: API key not found"
 
 
-@pytest.mark.parametrize("service_id", ["not-a-valid-id", 1234])
 def test_requires_auth_should_not_allow_service_id_with_the_wrong_data_type(
     client, service_jwt_secret, service_id
 ):
-    create_jwt_token(
-        client_id=service_id,
+    token = create_jwt_token(
+        client_id="not-a-valid-id",
         secret=service_jwt_secret,
     )
-    assert 1 == 0
 
-    # request.headers = {"Authorization": "Bearer {}".format(token)}
-    # with pytest.raises(AuthError) as exc:
-    #    requires_auth()
-    # assert (
-    #    exc.value.short_message
-    #    == "Invalid token: service id is not the right data type"
-    # )
+    request.headers = {"Authorization": "Bearer {}".format(token)}
+    with pytest.raises(AuthError) as exc:
+        requires_auth()
+    assert (
+        exc.value.short_message
+        == "Invalid token: service id is not the right data type"
+    )
+
+
+def test_requires_auth_should_not_allow_service_id_with_a_non_string(
+    client, service_jwt_secret, service_id
+):
+    with pytest.raises(TypeError):
+        create_jwt_token(
+            client_id=1234,
+            secret=service_jwt_secret,
+        )
 
 
 def test_requires_auth_returns_error_when_service_doesnt_exist(client, sample_api_key):