diff --git a/hgext3rd/chistedit.py b/hgext3rd/chistedit.py
--- a/hgext3rd/chistedit.py
+++ b/hgext3rd/chistedit.py
@@ -36,6 +36,7 @@
     util,
 )
 from mercurial.i18n import _
+from mercurial.utils import stringutil
 
 import functools
 import os
@@ -357,7 +358,7 @@
         line = "changeset: {0}:{1:<12}".format(ctx.rev(), ctx)
         win.addstr(1, 1, line[:length])
 
-        line = "user:      {0}".format(util.shortuser(ctx.user()))
+        line = "user:      {0}".format(stringutil.shortuser(ctx.user()))
         win.addstr(2, 1, line[:length])
 
         bms = repo.nodebookmarks(ctx.node())