diff --git a/colour_checker_detection/detection/segmentation.py b/colour_checker_detection/detection/segmentation.py
index c7cf9e5..0754b32 100644
--- a/colour_checker_detection/detection/segmentation.py
+++ b/colour_checker_detection/detection/segmentation.py
@@ -974,9 +974,9 @@ def detect_colour_checkers_segmentation(
     samples: int = 16,
     additional_data: bool = False,
     **kwargs: Any,
-) -> Tuple[DataDetectColourCheckersSegmentation, ...] | Tuple[
-    NDArrayFloat, ...
-]:
+) -> (
+    Tuple[DataDetectColourCheckersSegmentation, ...] | Tuple[NDArrayFloat, ...]
+):
     """
     Detect the colour checkers swatches in given image using segmentation.