--- a/hgext/histedit.py	Mon Mar 19 22:10:40 2018 +0900
+++ b/hgext/histedit.py	Sun Mar 04 10:34:09 2018 -0500
@@ -1317,8 +1317,8 @@
     # Create a backup so we can always abort completely.
     backupfile = None
     if not obsolete.isenabled(repo, obsolete.createmarkersopt):
-        backupfile = repair._bundle(repo, [parentctxnode], [topmost], root,
-                                    'histedit')
+        backupfile = repair.backupbundle(repo, [parentctxnode],
+                                         [topmost], root, 'histedit')
     state.backupfile = backupfile
 
 def _getsummary(ctx):