Index: django/http/__init__.py
===================================================================
--- django/http/__init__.py     (revision 11040)
+++ django/http/__init__.py     (working copy)
@@ -45,9 +45,7 @@
     def get_host(self):
         """Returns the HTTP host using the environment or request headers."""
         # We try three options, in order of decreasing preference.
-        if 'HTTP_X_FORWARDED_HOST' in self.META:
-            host = self.META['HTTP_X_FORWARDED_HOST']
-        elif 'HTTP_HOST' in self.META:
+        if 'HTTP_HOST' in self.META:
             host = self.META['HTTP_HOST']
         else:
             # Reconstruct the host using the algorithm from PEP 333.