diff --git a/tests/test_hierarchy.py b/tests/test_hierarchy.py
index dafbf46..2ce764c 100644
--- a/tests/test_hierarchy.py
+++ b/tests/test_hierarchy.py
@@ -100,7 +100,7 @@ class TestHierarchyCleanup(unittest.TestCase):
         self.mocked_shutil["rmtree"].avoids_symlink_attacks = False
         h = Hierarchy("/tmp/backup")
 
-        h.cleanup(remove_snapshots=True)
+        h.cleanup()
 
         self.mocked_shutil["rmtree"].assert_not_called()