diff -r 1a6f28439135 -r 5c9ad50fd62f mercurial/repair.py
--- a/mercurial/repair.py	Wed Jun 28 13:32:28 2017 +0200
+++ b/mercurial/repair.py	Wed Jun 28 13:32:36 2017 +0200
@@ -132,7 +132,7 @@
     stripbases = [cl.node(r) for r in tostrip]
 
     stripobsidx = obsmarkers = ()
-    if repo.ui.configbool('devel', 'strip-obsmarkers', True):
+    if repo.ui.configbool('devel', 'strip-obsmarkers'):
         obsmarkers = obsutil.exclusivemarkers(repo, stripbases)
     if obsmarkers:
         stripobsidx = [i for i, m in enumerate(repo.obsstore)