diff --git a/src/rybak/tree_renderer.py b/src/rybak/tree_renderer.py
index 05d39d9..a5402c3 100644
--- a/src/rybak/tree_renderer.py
+++ b/src/rybak/tree_renderer.py
@@ -130,8 +130,8 @@ def _render_file(self, template_name: str, target_name: str, data: TemplateData)
         )
 
     def remove_stale(self) -> None:
-        for path, _, files in self._context.target_root.walk(False):
-            existing_dir_path = path.relative_to(self._context.target_root)
+        for path, _, files in os.walk(self._context.target_root, False):
+            existing_dir_path = Path(path).relative_to(self._context.target_root)
             removed_files: MutableSet[str] = set()
 
             for file_name in files:
diff --git a/tests/compare.py b/tests/compare.py
index f7798b6..5e76e15 100644
--- a/tests/compare.py
+++ b/tests/compare.py
@@ -1,9 +1,8 @@
-from collections.abc import Iterable
 from pathlib import Path
-from typing import Optional
+from typing import Iterable, Optional, Tuple
 
 
-def dir_content(root: Path) -> Iterable[tuple[str, Optional[str]]]:
+def dir_content(root: Path) -> Iterable[Tuple[str, Optional[str]]]:
     return sorted(
         (str(path.relative_to(root)), path.read_text() if path.is_file() else None) for path in root.rglob('*')
     )