diff --git a/tests/test_config_schema.py b/tests/test_config_schema.py
new file mode 100644
index 0000000..e621aea
--- /dev/null
+++ b/tests/test_config_schema.py
@@ -0,0 +1,13 @@
+"""
+Unit test functions to test JSON Schema validation
+"""
+
+import jsonschema
+
+from tljh.config_schema import config_schema
+
+
+def test_valid_config_json_schema():
+    """Validate that the JSON schema fits its $schema specification"""
+    validator_class = jsonschema.validators.validator_for(config_schema)
+    validator_class.check_schema(config_schema)
diff --git a/tljh/configurer.py b/tljh/configurer.py
index 7a58bbe..2c5a32c 100644
--- a/tljh/configurer.py
+++ b/tljh/configurer.py
@@ -5,7 +5,6 @@ Config should never append or mutate, only set. Functions here could
 be called many times per lifetime of a jupyterhub.
 
 Traitlets that modify the startup of JupyterHub should not be here.
-FIXME: A strong feeling that JSON Schema should be involved somehow.
 """
 
 import os