diff --git a/direct/src/stdpy/file.py b/direct/src/stdpy/file.py
index 25f5b6e1a1..a3e114738c 100644
--- a/direct/src/stdpy/file.py
+++ b/direct/src/stdpy/file.py
@@ -13,6 +13,7 @@ __all__ = [
 from panda3d import core
 import sys
 import types
+import os
 
 _vfs = core.VirtualFileSystem.getGlobalPtr()