diff --git a/tests/test_app.py b/tests/test_app.py
index ad47e326..18b8ef45 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -14,5 +14,6 @@ def test_microscope_creation():
     assert isinstance(api_microscope.camera, BaseCamera)
     assert isinstance(api_microscope.stage, BaseStage)
 
+
 def test_openapi_valid():
-    assert validate_spec(labthing.spec)
\ No newline at end of file
+    assert validate_spec(labthing.spec)