--- Ft/Lib/DistExt/BuildDocs.py
+++ Ft/Lib/DistExt/BuildDocs.py
@@ -18,6 +18,10 @@
 from distutils.core import Command, DEBUG
 from distutils.errors import *
 
+import xml
+if hasattr(xml, "use_pyxml"):
+    xml.use_pyxml()
+
 from Ft import GetConfigVar
 from Ft.Lib import Uri, ImportUtil
 from Ft.Lib.DistExt import Structures
--- Ft/Lib/DistExt/Util.py
+++ Ft/Lib/DistExt/Util.py
@@ -4,6 +4,9 @@
 import sys
 from distutils import sysconfig, util
 from distutils.errors import DistutilsPlatformError
+import xml
+if hasattr(xml, "use_pyxml"):
+    xml.use_pyxml()
 from xml.dom import pulldom
 from xml.sax import make_parser
 
--- Ft/Xml/__init__.py
+++ Ft/Xml/__init__.py
@@ -170,6 +170,9 @@
     import Ft.Xml.XUpdate
     return XUpdate.ApplyXupdate(*args, **kw_args)
 
+import xml
+if hasattr(xml, "use_pyxml"):
+    xml.use_pyxml()
 
 from distutils import version
 pyxml_required = version.StrictVersion('0.8.0')