diff --git a/brdr/aligner.py b/brdr/aligner.py
index 6e79801..5ff3cfe 100644
--- a/brdr/aligner.py
+++ b/brdr/aligner.py
@@ -1203,7 +1203,6 @@ def _add_multi_polygons_from_geom_to_array(geom: BaseGeometry, array):
         return array
 
 
-
 def _calculate_geom_by_intersection_and_reference(
     geom_intersection: BaseGeometry,
     geom_reference: BaseGeometry,
@@ -1311,7 +1310,6 @@ def _calculate_geom_by_intersection_and_reference(
     return geom, geom_relevant_intersection, geom_relevant_difference
 
 
-
 def _get_relevant_polygons_from_geom(geometry: BaseGeometry, buffer_distance: float):
     """
     Get only the relevant parts (polygon) from a geometry.
@@ -1336,7 +1334,6 @@ def _get_relevant_polygons_from_geom(geometry: BaseGeometry, buffer_distance: fl
     return make_valid(unary_union(array))
 
 
-
 def _equal_geom_in_array(geom, geom_array):
     """
     Check if a predicted geometry is equal to other predicted geometries in a list.