diff -r 8815e799d865 -r cd56f4d8b5a3 hgext3rd/topic/revset.py
--- a/hgext3rd/topic/revset.py	Wed Mar 30 03:21:44 2016 -0700
+++ b/hgext3rd/topic/revset.py	Wed Mar 30 03:22:50 2016 -0700
@@ -69,7 +69,7 @@
     return revset.baseset(stack.getstack(repo, topic)) & subset
 
 
-def modsetup():
+def modsetup(ui):
     revset.symbols.update({'topic': topicset})
     revset.symbols.update({'ngtip': ngtipset})
     revset.symbols.update({'stack': stackset})