--- a/tests/test-shelve.t	Tue Oct 14 13:27:00 2014 -0700
+++ b/tests/test-shelve.t	Tue Oct 14 13:34:25 2014 -0700
@@ -508,12 +508,10 @@
 
 test bug 4073 we need to enable obsolete markers for it
 
-  $ cat > ../obs.py << EOF
-  > import mercurial.obsolete
-  > mercurial.obsolete._enabled = True
+  $ cat >> $HGRCPATH << EOF
+  > [experimental]
+  > evolution=createmarkers
   > EOF
-  $ echo '[extensions]' >> $HGRCPATH
-  $ echo "obs=${TESTTMP}/obs.py" >> $HGRCPATH
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved