diff --git a/myria3d/pctl/dataset/utils.py b/myria3d/pctl/dataset/utils.py
index e2ee89ed..6b2e5960 100644
--- a/myria3d/pctl/dataset/utils.py
+++ b/myria3d/pctl/dataset/utils.py
@@ -30,9 +30,7 @@ def find_file_in_dir(data_dir: str, basename: str) -> str:
     return files[0]
 
 
-def get_mosaic_of_centers(
-    tile_width: Number, subtile_width: Number, subtile_overlap: Number = 0
-):
+def get_mosaic_of_centers(tile_width: Number, subtile_width: Number, subtile_overlap: Number = 0):
     if subtile_overlap < 0:
         raise ValueError("datamodule.subtile_overlap must be positive.")
 
@@ -62,9 +60,7 @@ def pdal_read_las_array(las_path: str):
 def pdal_read_las_array_as_float32(las_path: str):
     """Read LAS as a a named array, casted to floats."""
     arr = pdal_read_las_array(las_path)
-    all_floats = np.dtype(
-        {"names": arr.dtype.names, "formats": ["f4"] * len(arr.dtype.names)}
-    )
+    all_floats = np.dtype({"names": arr.dtype.names, "formats": ["f4"] * len(arr.dtype.names)})
     return arr.astype(all_floats)
 
 
@@ -125,13 +121,9 @@ def split_cloud_into_samples(
 
     """
     points = pdal_read_las_array_as_float32(las_path)
-    pos = np.asarray(
-        [points["X"], points["Y"], points["Z"]], dtype=np.float32
-    ).transpose()
+    pos = np.asarray([points["X"], points["Y"], points["Z"]], dtype=np.float32).transpose()
     kd_tree = cKDTree(pos[:, :2] - pos[:, :2].min(axis=0))
-    XYs = get_mosaic_of_centers(
-        tile_width, subtile_width, subtile_overlap=subtile_overlap
-    )
+    XYs = get_mosaic_of_centers(tile_width, subtile_width, subtile_overlap=subtile_overlap)
     for center in XYs:
         radius = subtile_width // 2  # Square receptive field.
         minkowski_p = np.inf
@@ -160,9 +152,7 @@ def get_las_paths_by_split_dict(
     for phase in ["train", "val", "test"]:
         basenames = split_df[split_df.split == phase].basename.tolist()
         # Reminder: an explicit data structure with ./val, ./train, ./test subfolder is required.
-        las_paths_by_split_dict[phase] = [
-            str(Path(data_dir) / phase / b) for b in basenames
-        ]
+        las_paths_by_split_dict[phase] = [str(Path(data_dir) / phase / b) for b in basenames]
 
     if not las_paths_by_split_dict:
         raise FileNotFoundError(