--- a/tests/test-diffdir.t	Thu Oct 07 11:45:17 2010 -0500
+++ b/tests/test-diffdir.t	Thu Oct 07 18:05:04 2010 -0500
@@ -33,8 +33,8 @@
   +123
 
   $ hg diff -r ""
-  abort: 00changelog.i@: ambiguous identifier!
+  hg: parse error: empty query
   [255]
   $ hg diff -r tip -r ""
-  abort: 00changelog.i@: ambiguous identifier!
+  hg: parse error: empty query
   [255]