diff --git a/django/contrib/admin/__init__.py b/django/contrib/admin/__init__.py
index 23f51fabdd..f67995c63a 100644
--- a/django/contrib/admin/__init__.py
+++ b/django/contrib/admin/__init__.py
@@ -1,12 +1,9 @@
-# ACTION_CHECKBOX_NAME is unused, but should stay since its import from here
-# has been referenced in documentation.
 from django.contrib.admin.decorators import register
 from django.contrib.admin.filters import (
     AllValuesFieldListFilter, BooleanFieldListFilter, ChoicesFieldListFilter,
     DateFieldListFilter, FieldListFilter, ListFilter, RelatedFieldListFilter,
     RelatedOnlyFieldListFilter, SimpleListFilter,
 )
-from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME
 from django.contrib.admin.options import (
     HORIZONTAL, VERTICAL, ModelAdmin, StackedInline, TabularInline,
 )
@@ -14,10 +11,10 @@ from django.contrib.admin.sites import AdminSite, site
 from django.utils.module_loading import autodiscover_modules
 
 __all__ = [
-    "register", "ACTION_CHECKBOX_NAME", "ModelAdmin", "HORIZONTAL", "VERTICAL",
-    "StackedInline", "TabularInline", "AdminSite", "site", "ListFilter",
-    "SimpleListFilter", "FieldListFilter", "BooleanFieldListFilter",
-    "RelatedFieldListFilter", "ChoicesFieldListFilter", "DateFieldListFilter",
+    "register", "ModelAdmin", "HORIZONTAL", "VERTICAL", "StackedInline",
+    "TabularInline", "AdminSite", "site", "ListFilter", "SimpleListFilter",
+    "FieldListFilter", "BooleanFieldListFilter", "RelatedFieldListFilter",
+    "ChoicesFieldListFilter", "DateFieldListFilter",
     "AllValuesFieldListFilter", "RelatedOnlyFieldListFilter", "autodiscover",
 ]
 
diff --git a/docs/releases/3.1.txt b/docs/releases/3.1.txt
index a35ae79ea9..37a3ea9e85 100644
--- a/docs/releases/3.1.txt
+++ b/docs/releases/3.1.txt
@@ -268,6 +268,10 @@ Miscellaneous
 * The compatibility imports of ``Context``, ``ContextPopException``, and
   ``RequestContext`` in ``django.template.base`` are removed.
 
+* The compatibility import of
+  ``django.contrib.admin.helpers.ACTION_CHECKBOX_NAME`` in
+  ``django.contrib.admin`` is removed.
+
 * The :setting:`STATIC_URL` and :setting:`MEDIA_URL` settings set to relative
   paths are now prefixed by the server-provided value of ``SCRIPT_NAME`` (or
   ``/`` if not set). This change should not affect settings set to valid URLs