diff -r 0428feb1f0d7 -r bae6f1418a95 mercurial/obsolete.py
--- a/mercurial/obsolete.py	Wed Sep 26 22:45:44 2018 +0200
+++ b/mercurial/obsolete.py	Wed Sep 26 23:37:43 2018 +0200
@@ -1016,7 +1016,7 @@
             if saveeffectflag:
                 # The effect flag is saved in a versioned field name for future
                 # evolution
-                effectflag = obsutil.geteffectflag(rel)
+                effectflag = obsutil.geteffectflag(prec, sucs)
                 localmetadata[obsutil.EFFECTFLAGFIELD] = "%d" % effectflag
 
             # Creating the marker causes the hidden cache to become invalid,