Index: django/db/models/options.py
===================================================================
--- django/db/models/options.py	(revision 11290)
+++ django/db/models/options.py	(working copy)
@@ -329,6 +329,8 @@
             cache[f.name] = (f, model, True, True)
         for f, model in self.get_fields_with_model():
             cache[f.name] = (f, model, True, False)
+            if f.attname != f.name:
+                cache[f.attname] = (f, model, True, False)
         if self.order_with_respect_to:
             cache['_order'] = OrderWrt(), None, True, False
         if app_cache_ready():