--- a/tests/test-log.t	Tue Oct 14 13:27:00 2014 -0700
+++ b/tests/test-log.t	Tue Oct 14 13:34:25 2014 -0700
@@ -1377,12 +1377,10 @@
   
 enable obsolete to test hidden feature
 
-  $ cat > ${TESTTMP}/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 log --template='{rev}:{node}\n'
   1:a765632148dc55d38c35c4f247c618701886cb2f