diff --git a/tests/tests/test_unit/test_regions/test_region_analysis.py b/tests/tests/test_unit/test_regions/test_region_analysis.py
index 3c4bf86..c9f31f8 100644
--- a/tests/tests/test_unit/test_regions/test_region_analysis.py
+++ b/tests/tests/test_unit/test_regions/test_region_analysis.py
@@ -132,6 +132,7 @@ def test_summarise_brain_regions_some_empty(
         else:
             assert df[key].iloc[0] == value
 
+
 def test_summarise_brain_regions_all_empty(
     labels_layer, empty_labels_layer, tmp_path
 ):