diff --git a/PCbuild/rmpyc.py b/PCbuild/rmpyc.py
index 019c69b16e7..a87eab86c9e 100644
--- a/PCbuild/rmpyc.py
+++ b/PCbuild/rmpyc.py
@@ -1,5 +1,7 @@
 # Remove all the .pyc and .pyo files under ../Lib.
 
+from __future__ import nested_scopes
+
 def deltree(root):
     import os
     def rm(path):