diff --git a/tests/test_cli_resclust.py b/tests/test_cli_resclust.py
index 486d37c..c1e68fc 100644
--- a/tests/test_cli_resclust.py
+++ b/tests/test_cli_resclust.py
@@ -54,6 +54,7 @@ def test_resclust_maxclust(example_pdbpath):
         None,
     )
 
+
 def test_resclust_genoutput(example_pdbpath):
     main(
         example_pdbpath,