diff --git a/hgext/histedit.py b/hgext/histedit.py
--- a/hgext/histedit.py
+++ b/hgext/histedit.py
@@ -1609,7 +1609,7 @@
          _("use 'hg histedit --continue' or 'hg histedit --abort'")])
     cmdutil.afterresolvedstates.append(
         ['histedit-state', _('hg histedit --continue')])
-    if ui.configbool("experimental", "histeditng"):
-        globals()['base'] = action(['base', 'b'],
-            _('checkout changeset and apply further changesets from there')
-        )(base)
+
+    globals()['base'] = action(['base', 'b'],
+        _('checkout changeset and apply further changesets from there')
+    )(base)
diff --git a/tests/test-histedit-base.t b/tests/test-histedit-base.t
--- a/tests/test-histedit-base.t
+++ b/tests/test-histedit-base.t
@@ -5,8 +5,6 @@
   > tglog = log -G --template "{rev}:{node}:{phase} '{desc}'\n"
   > [extensions]
   > histedit=
-  > [experimental]
-  > histeditng=True
   > EOF
 
 Create repo a:
@@ -238,15 +236,6 @@
   hg: parse error: base "d273e35dcdf2" changeset was an edited list candidate
   (base must only use unlisted changesets)
 
-  $ hg --config experimental.histeditng=False histedit 5 --commands - 2>&1 << EOF | fixbundle
-  > base cd010b8cd998 A
-  > pick d273e35dcdf2 B
-  > pick 03772da75548 X
-  > pick b2f90fd8aa85 I
-  > pick e8c55b19d366 J
-  > EOF
-  hg: parse error: unknown action "base"
-
   $ hg tglog
   @  8:e8c55b19d366b335626e805484110d1d5f6f2ea3:draft 'J'
   |