diff --git a/tests/test_potential.py b/tests/test_potential.py
index <HASH>..<HASH> 100644
--- a/tests/test_potential.py
+++ b/tests/test_potential.py
@@ -160,7 +160,6 @@ def test_TwoPowerSphericalPotentialIntegerSelf():
 def test_ZIsNone():
     # TODO replace manual additions with an automatic method
     # that checks the signatures all methods in all potentials
-
     kw = dict(amp=1.,a=1.,normalize=False,ro=None,vo=None)
     Rs= numpy.array([0.5,1.,2.])
retriggering codecov

I don’t believe the results.