diff --git a/test/unit/obj/test_diskfile.py b/test/unit/obj/test_diskfile.py
index 8d3a484b7e..327d860e51 100644
--- a/test/unit/obj/test_diskfile.py
+++ b/test/unit/obj/test_diskfile.py
@@ -2810,7 +2810,7 @@ class TestECDiskFileManager(DiskFileManagerMixin, BaseTestCase):
     def test_cleanup_ondisk_files_commit_window(self):
         # verify that non-durable files are not reclaimed regardless of
         # timestamp if written to disk within commit_window
-        much_older = Timestamp(time() - 1001).internal
+        much_older = Timestamp(time() - 2000).internal
         older = Timestamp(time() - 1001).internal
         newer = Timestamp(time() - 900).internal
         scenarios = [