--- a/tests/test-simple-update.t	Thu Jun 15 14:22:39 2017 -0400
+++ b/tests/test-simple-update.t	Tue Jun 20 09:45:02 2017 -0400
@@ -77,7 +77,7 @@
   > [worker]
   > numcpus = 4
   > EOF
-  $ for i in `python $TESTDIR/seq.py 1 100`; do
+  $ for i in `$PYTHON $TESTDIR/seq.py 1 100`; do
   >   echo $i > $i
   > done
   $ hg ci -qAm 'add 100 files'