diff --git a/src/aarecommon/math/find_xtal.py b/src/aarecommon/math/find_xtal.py
index e3f3c1e..848946f 100644
--- a/src/aarecommon/math/find_xtal.py
+++ b/src/aarecommon/math/find_xtal.py
@@ -324,9 +324,7 @@ def raster_centre_of_mass(result_array, images) -> CenterOfMassModel | None:
 
 
 def raster_highest_score(
-    images,
-    min_low_res_spots: float = 10.0,
-    min_spots_indexed: int = 1,
+    images, min_low_res_spots: float = 10.0, min_spots_indexed: int = 1
 ) -> CenterOfMassModel | None:
     """Target the grid cell with the highest crystal score.
 
@@ -678,8 +676,7 @@ if __name__ == "__main__":
     from types import SimpleNamespace as _I
 
     def _cell(nx, ny, low, idx, bkg=0):
-        return _I(nx=nx, ny=ny, number=nx * 3 + ny,
-                  spots_low_res=low, spots_indexed=idx, bkg=bkg)
+        return _I(nx=nx, ny=ny, number=nx * 3 + ny, spots_low_res=low, spots_indexed=idx, bkg=bkg)
 
     # Real crystal at (1,1) -> best cell returned.
     strong = [_cell(x, y, 0, 0) for x in range(3) for y in range(3)]