diff -r 7d86594cb829 -r 51afc979d88d hgext3rd/topic/__init__.py
--- a/hgext3rd/topic/__init__.py	Fri Jul 14 01:49:43 2017 +0200
+++ b/hgext3rd/topic/__init__.py	Fri Jul 14 01:53:56 2017 +0200
@@ -615,7 +615,7 @@
         # running.
         if repo.ui.hasconfig('experimental', 'topicrebase'):
             isrebase = True
-        if repo.ui.configbool('_internal', 'updating-to-t0'):
+        if repo.ui.configbool('_internal', 'keep-topic'):
             ist0 = True
         if ((not partial and not branchmerge) or isrebase) and not ist0:
             ot = repo.currenttopic
@@ -640,7 +640,7 @@
     thezeros = set(['t0', 'b0'])
     overrides = {}
     if node in thezeros or rev in thezeros:
-        overrides[('_internal', 'updating-to-t0')] = 'yes'
+        overrides[('_internal', 'keep-topic')] = 'yes'
     with repo.ui.configoverride(overrides, source='topic-extension'):
         return orig(ui, repo, node, rev, clean, date, check, merge, tool)