diff -r 5c931bd3dc1e -r a7766286a7be thirdparty/google_appengine/google/appengine/datastore/datastore_index.py
--- a/thirdparty/google_appengine/google/appengine/datastore/datastore_index.py	Thu Feb 12 10:24:37 2009 +0000
+++ b/thirdparty/google_appengine/google/appengine/datastore/datastore_index.py	Thu Feb 12 12:30:36 2009 +0000
@@ -328,8 +328,7 @@
     else:
       props.append((prop_name, ASCENDING))
 
-  if (kind and not ancestor and
-      (not props or (len(props) == 1 and props[0][1] == ASCENDING))):
+  if kind and not ancestor and len(props) <= 1:
     required = False
 
     if props: