diff --git a/tests/test_util.py b/tests/test_util.py
index 5a036a0..033c745 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -205,7 +205,7 @@ def test_2_2_links(self):
 			('bx', 'b'),
 			('Dir/cx', 'Dir/c'),
 			('Dir/dx', 'Dir/d'),
-			('DirX', 'Dir'),
+			('DirX', 'Dir', True),
 		])
 		results = set(iter_tree_files(self.temp_dir))
 		self.assertEqual(results, set(map(ospath, [
diff --git a/tests/util.py b/tests/util.py
index 301427b..29b95b6 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -48,10 +48,11 @@ def make_links(temp_dir: pathlib.Path, links: Iterable[Tuple[str, str]]) -> None
 	the destination link path (:class:`str`) and source node path
 	(:class:`str`).
 	"""
-	for link, node in links:
+	for link, node, *opt in links:
 		src = temp_dir / ospath(node)
 		dest = temp_dir / ospath(link)
-		os.symlink(src, dest)
+		is_dir = opt[0] if opt else False
+		os.symlink(src, dest, target_is_directory=is_dir)
 
 
 def mkfile(file: pathlib.Path) -> None: