diff --git a/tests/test_electricity.py b/tests/test_electricity.py
index 99db96cb..a6480d24 100644
--- a/tests/test_electricity.py
+++ b/tests/test_electricity.py
@@ -81,7 +81,9 @@ def get_db():
 @pytest.mark.skipif(not key, reason="No access to decryption key")
 def test_losses():
     assert len(el.network_loss) == 13
-    assert np.isclose(el.network_loss["CAZ"]["high"]["transf_loss"], 0.0223586, rtol=1e-2)
+    assert np.isclose(
+        el.network_loss["CAZ"]["high"]["transf_loss"], 0.0223586, rtol=1e-2
+    )
 
 
 @pytest.mark.skipif(not key, reason="No access to decryption key")