diff --git a/oceanmesh/edgefx.py b/oceanmesh/edgefx.py
index 9a6ebf0..5eaf2e1 100644
--- a/oceanmesh/edgefx.py
+++ b/oceanmesh/edgefx.py
@@ -871,9 +871,7 @@ def wavelength_sizing_function(
         dy *= meters_per_degree
         dx *= meters_per_degree
 
-    grid = Grid(
-        bbox=dem.bbox, dx=dx, dy=dy, extrapolate=True, values=0.0, crs=crs
-    )
+    grid = Grid(bbox=dem.bbox, dx=dx, dy=dy, extrapolate=True, values=0.0, crs=crs)
     tmpz[np.abs(tmpz) < 1] = 1
     grid.values = period * np.sqrt(gravity * np.abs(tmpz)) / wl
 
diff --git a/oceanmesh/filterfx.py b/oceanmesh/filterfx.py
index 3c78ae2..efef4a3 100644
--- a/oceanmesh/filterfx.py
+++ b/oceanmesh/filterfx.py
@@ -42,7 +42,7 @@ def filt2(Z, res, wl, filtertype, truncate=2.6):
                     "Wavelength lambda must be a two-element array for a bandpass filter."
                 )
 
-            if ~isinstance(wl, np.ndarray) :
+            if ~isinstance(wl, np.ndarray):
                 wl = np.array(list(wl))
 
         else:
diff --git a/tests/test_global_stereo.py b/tests/test_global_stereo.py
index ca5920d..38c8e25 100644
--- a/tests/test_global_stereo.py
+++ b/tests/test_global_stereo.py
@@ -6,7 +6,7 @@
 # https://github.com/ec-jrc/pyPoseidon/tree/master/Tutorial
 # You can get them with
 # curl -L url https://www.dropbox.com/sh/nd2b012wrpt6qnq/AAAD7aA_qXztUhlT39YK2yBua?dl=1 > data.zip
-fname = os.path.join(os.path.dirname(__file__), 'data', 'ocean', "ocean.shp")
+fname = os.path.join(os.path.dirname(__file__), "data", "ocean", "ocean.shp")
 
 
 def test_global_stereo():