diff --git a/indexer.py b/indexer.py
index 815b702..d04ebed 100755
--- a/indexer.py
+++ b/indexer.py
@@ -13,6 +13,7 @@
 import os
 import sys
 import time
+import base64
 import hashlib
 
 import config
@@ -63,7 +64,8 @@ def clean(path, root = True):
         if not root and not os.listdir(path):
             print('remove dir:', path)
             os.rmdir(path)
-
+def mangle(path):
+    return base64.b64encode(hashlib.sha256((config.salt + ':' + path).encode()).digest()).decode()[:20].replace('/', '_').replace('+', '-')
 
 
 class Node:
@@ -77,7 +79,7 @@ class Node:
         self.ext = '' if self.isdir else nameext(name)[1]
         self.path = join(parent.path, name) if parent else name
         self.date = os.path.getmtime(src)
-        self.mangle = config.mangle + hashlib.md5((config.salt + ':' + self.path).encode()).hexdigest() + '.' + self.ext
+        self.mangle = config.mangle + mangle(self.path) + '.' + self.ext
         self.hide = hide or (parent and parent.hide)
         self.url = join(config.url, self.path)
         self.mangleurl = join(config.url, self.mangle)