--- a/tests/test-exchange-C3.t	Fri Mar 24 09:42:39 2017 +0100
+++ b/tests/test-exchange-C3.t	Fri Mar 24 09:49:03 2017 +0100
@@ -65,7 +65,7 @@
   28b51eb45704506b5c603decd6bf7ac5e0f6a52f beac7228bbe708bc7c9181c3c27f8a17f21dbd9f
   06055a7959d4128e6e3bccfd01482e83a2db8a3a 8b648bd67281e9e525919285ac7b3bb2836c2f02
   e5ea8f9c73143125d36658e90ef70c6d2027a5b7 dcd2b566ad0983333be704afdc205066e1a6b742
-  $ hg debugobshashrange --rev 'head()'
+  $ hg debugobshashrange --subranges --rev 'head()'
            rev         node        index         size        depth      obshash
              0 a9bdc8b26820            0            1            1 40be80b35671
   $ cd ..