--- a/tests/test-ssh-proto.t	Tue Sep 18 22:40:03 2018 -0400
+++ b/tests/test-ssh-proto.t	Tue Sep 18 23:47:21 2018 -0400
@@ -22,7 +22,7 @@
 
   $ cat >> $HGRCPATH << EOF
   > [ui]
-  > ssh = $PYTHON "$TESTDIR/dummyssh"
+  > ssh = "$PYTHON" "$TESTDIR/dummyssh"
   > [devel]
   > debug.peer-request = true
   > [extensions]