diff --git a/src/archunitpython/common/extraction/extract_graph.py b/src/archunitpython/common/extraction/extract_graph.py
index 5d3d282..d1ed199 100644
--- a/src/archunitpython/common/extraction/extract_graph.py
+++ b/src/archunitpython/common/extraction/extract_graph.py
@@ -58,7 +58,9 @@ def extract_graph(
         project_path = os.getcwd()
 
     project_path = os.path.abspath(project_path)
-    excludes = list(set(exclude_patterns)) if exclude_patterns is not None else list(_DEFAULT_EXCLUDE)
+    excludes = (
+        list(set(exclude_patterns)) if exclude_patterns is not None else list(_DEFAULT_EXCLUDE)
+    )
     ignore_type_checking_imports = bool(
         options and options.ignore_type_checking_imports
     )