diff --git a/simple_history/admin.py b/simple_history/admin.py
index e07a9b6b..3a5dbf37 100644
--- a/simple_history/admin.py
+++ b/simple_history/admin.py
@@ -122,8 +122,7 @@ def set_history_delta_changes(self, action_list: Sequence[HistoricalChanges]):
                 continue
             delta = previous.diff_against(current)
             previous.history_delta_changes = [
-                self.format_history_delta_change(change)
-                for change in delta.changes
+                self.format_history_delta_change(change) for change in delta.changes
             ]
             previous = current