diff --git a/src/worker.py b/src/worker.py
index d6ca83c..7beb2ee 100644
--- a/src/worker.py
+++ b/src/worker.py
@@ -1,5 +1,6 @@
 import logging
 import os.path
+import re
 from fnmatch import fnmatch
 from boxsdk import Client
 from boxsdk.object.folder import Folder
@@ -63,7 +64,9 @@ class Worker:
             for child in children:
                 if child.modified_at < self.after_date:
                     continue
-                self.queue.put(Job(child, job.local_path / child.name))
+                # Sanitize NTFS/FAT illegal characters
+                local_file_name = re.sub(r'[\\/:*"<>|]', '_', child.name)
+                self.queue.put(Job(child, job.local_path / local_file_name))
         except Exception as e:
             logging.error(
                 'Fail to process directory [%s]: %s', job.remote_path, e)