diff --git a/.hgignore b/.hgignore
index 4e0dd4e45cb..944bd134a54 100644
--- a/.hgignore
+++ b/.hgignore
@@ -48,6 +48,9 @@ libpython*.a
 *~
 Lib/lib2to3/*.pickle
 Lib/test/data/*
+PC/python_nt*.h
+PC/pythonnt_rc*.h
+PC/*.obj
 PCbuild/*.exe
 PCbuild/*.dll
 PCbuild/*.pdb