--- a/Tools/freeze/modulefinder.py
+++ b/Tools/freeze/modulefinder.py
@@ -28,6 +28,17 @@
     paths = packagePathMap.get(packagename, [])
     paths.append(path)
     packagePathMap[packagename] = paths
+
+replacePackageMap = {}
+
+# This ReplacePackage mechanism allows modulefinder to work around the
+# way the _xmlplus package injects itself under the name "xml" into
+# sys.modules at runtime by calling ReplacePackage("_xmlplus", "xml")
+# before running ModuleFinder.
+
+def ReplacePackage(oldname, newname):
+    replacePackageMap[oldname] = newname
+
 
 class Module:
 
@@ -336,6 +347,9 @@
 
     def load_package(self, fqname, pathname):
         self.msgin(2, "load_package", fqname, pathname)
+        newname = replacePackageMap.get(fqname)
+        if newname:
+            fqname = newname
         m = self.add_module(fqname)
         m.__file__ = pathname
         m.__path__ = [pathname]