diff --git a/datasetter/api.py b/datasetter/api.py
index eea7b75..afaf4ec 100644
--- a/datasetter/api.py
+++ b/datasetter/api.py
@@ -38,7 +38,7 @@ def add_dataset(fast_api, uri, dataset):
 
     @fast_api.get(uri + "/")
     def get_metadata():
-        return as_json(dataset.metadata)
+        return as_json(dataset.metadata())
 
     @fast_api.get(uri + "/count")
     @forge.sign(*kwargs)
diff --git a/test/test_api.py b/test/test_api.py
index 3e662eb..46b33b2 100644
--- a/test/test_api.py
+++ b/test/test_api.py
@@ -24,13 +24,14 @@
 metadata = {
     "description": "A simple dataset to make tests.",
     "facets": ['letter', 'greek'],
+    "name": "Random letters",
     "columns": [
         {"name": "letter", "type": "string", "description": "A column with letters."},
         {"name": "greek", "type": "string", "description": "A column with greek letters."},
         {"name": "number", "type": "integer", "description": "A column with numbers."},
         ]}
 
-dataset = PandasDataset(df, ['letter', 'greek'], metadata=metadata)
+dataset = PandasDataset(df, **metadata)
 
 app = FastAPI()
 add_dataset(app, 'pandas-dataset', dataset)
diff --git a/test/test_dataset.py b/test/test_dataset.py
index ed39057..eac53fb 100644
--- a/test/test_dataset.py
+++ b/test/test_dataset.py
@@ -1,5 +1,4 @@
 import pytest
-import pandas as pd
 
 from datasetter.dataset import Dataset
 
diff --git a/tox.ini b/tox.ini
index b96937e..2d35aa4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,7 @@
 [flake8]
 max-line-length = 100
+exclude = .git,__pycache__,datasetter.egg-info,.eggs,.tox,.ipynb_checkpoints
+
 
 [tox]
 envlist = py38,py39