diff --git a/tests/conftest.py b/tests/conftest.py
index aab6300..44e6ab5 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -22,6 +22,11 @@ def bad_top_level_field():
     return json.load(open(f"{json_dir}/bad_top_level_field.json", "r"))
 
 
+@pytest.fixture
+def bad_network_type():
+    return json.load(open(f"{json_dir}/bad_network_type.json", "r"))
+
+
 @pytest.fixture
 def metadata_as_list():
     return json.load(open(f"{json_dir}/metadata_as_list.json", "r"))
diff --git a/tests/test_files/bad_network_type.json b/tests/test_files/bad_network_type.json
new file mode 100644
index 0000000..3a38dc7
--- /dev/null
+++ b/tests/test_files/bad_network_type.json
@@ -0,0 +1 @@
+{"network-type": "badnt", "incidences": []}
\ No newline at end of file
diff --git a/tests/test_schema.py b/tests/test_schema.py
index 04017e3..fb9f219 100644
--- a/tests/test_schema.py
+++ b/tests/test_schema.py
@@ -11,6 +11,11 @@ def test_bad_top_level_field(validator, bad_top_level_field):
         validator(bad_top_level_field)
 
 
+def test_bad_network_type(validator, bad_network_type):
+    with pytest.raises(ValueError):
+        validator(bad_network_type)
+
+
 def test_metadata_as_list(validator, metadata_as_list):
     with pytest.raises(ValueError):
         validator(metadata_as_list)