diff --git a/jupyter_server/services/contents/filemanager.py b/jupyter_server/services/contents/filemanager.py
index 42c18f6e36..e8fe40d0ba 100644
--- a/jupyter_server/services/contents/filemanager.py
+++ b/jupyter_server/services/contents/filemanager.py
@@ -9,7 +9,6 @@
 import sys
 import warnings
 from datetime import datetime
-from posixpath import isabs
 
 import nbformat
 from anyio.to_thread import run_sync