diff --git a/test/test_config.py b/test/test_config.py
index 108f4cdc..248764cb 100644
--- a/test/test_config.py
+++ b/test/test_config.py
@@ -9,7 +9,7 @@
 @pytest.fixture()
 def valid_config():
     return Config(
-        path=Path(__file__).parent.parent / "datagateway_api" / "config.json.example"
+        path=Path(__file__).parent.parent / "datagateway_api" / "config.json.example",
     )