diff --git a/src/py21cmsense/observatory.py b/src/py21cmsense/observatory.py
index ca35147..eabda04 100644
--- a/src/py21cmsense/observatory.py
+++ b/src/py21cmsense/observatory.py
@@ -228,7 +228,7 @@ def from_ska(
         cls,
         subarray_type: str,
         array_type: str = "low",
-        Trcv: tp.Temperature | Callable = 100 * un.K, # noqa N803
+        Trcv: tp.Temperature | Callable = 100 * un.K,  # noqa N803
         frequency: tp.Frequency | None = 150.0 * un.MHz,
         **kwargs,
     ) -> Observatory:
diff --git a/tests/test_observatory.py b/tests/test_observatory.py
index 4d3c5de..a5bad18 100644
--- a/tests/test_observatory.py
+++ b/tests/test_observatory.py
@@ -224,8 +224,7 @@ def test_from_ska():
         exclude_stations="C1,C2",
     )
     low_custom = LowSubArray(
-        subarray_type="custom", 
-        custom_stations="C*,E1-*", exclude_stations="C1,C2"
+        subarray_type="custom", custom_stations="C*,E1-*", exclude_stations="C1,C2"
     )  # selects all core stations, 6 stations in the E1 cluster, excludes core stations C1 and C2
     assert obs.antpos.shape == low_custom.array_config.xyz.data.shape