diff --git a/django/contrib/admin/sites.py b/django/contrib/admin/sites.py
index 68621e333e..10b82af0a4 100644
--- a/django/contrib/admin/sites.py
+++ b/django/contrib/admin/sites.py
@@ -139,7 +139,7 @@ class AdminSite(object):
         Returns True if the given HttpRequest has permission to view
         *at least one* page in the admin site.
         """
-        return request.user.is_authenticated() and request.user.is_staff
+        return request.user.is_staff
 
     def check_dependencies(self):
         """
diff --git a/django/contrib/admin/templates/admin/base.html b/django/contrib/admin/templates/admin/base.html
index 95257285eb..a9d281641a 100644
--- a/django/contrib/admin/templates/admin/base.html
+++ b/django/contrib/admin/templates/admin/base.html
@@ -22,7 +22,7 @@
         <div id="branding">
         {% block branding %}{% endblock %}
         </div>
-        {% if user.is_authenticated and user.is_staff %}
+        {% if user.is_staff %}
         <div id="user-tools">
             {% trans 'Welcome,' %}
             <strong>{% firstof user.first_name user.username %}</strong>.
diff --git a/django/contrib/admin/views/decorators.py b/django/contrib/admin/views/decorators.py
index 4566828b0a..d28186e4e7 100644
--- a/django/contrib/admin/views/decorators.py
+++ b/django/contrib/admin/views/decorators.py
@@ -28,7 +28,7 @@ def staff_member_required(view_func):
     member, displaying the login page if necessary.
     """
     def _checklogin(request, *args, **kwargs):
-        if request.user.is_authenticated() and request.user.is_staff:
+        if request.user.is_staff:
             # The user is valid. Continue to the admin page.
             return view_func(request, *args, **kwargs)
 
diff --git a/django/middleware/doc.py b/django/middleware/doc.py
index 48c155c392..2b4e6827f8 100644
--- a/django/middleware/doc.py
+++ b/django/middleware/doc.py
@@ -12,7 +12,7 @@ class XViewMiddleware(object):
         indicating the view function.  This is used by the documentation module
         to lookup the view function for an arbitrary page.
         """
-        if request.method == 'HEAD' and (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS or (request.user.is_authenticated() and request.user.is_staff)):
+        if request.method == 'HEAD' and (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS or request.user.is_staff):
             response = http.HttpResponse()
             response['X-View'] = "%s.%s" % (view_func.__module__, view_func.__name__)
             return response
diff --git a/docs/topics/auth.txt b/docs/topics/auth.txt
index 9874135b02..6b120eac38 100644
--- a/docs/topics/auth.txt
+++ b/docs/topics/auth.txt
@@ -1031,7 +1031,7 @@ checks to make sure the user is logged in and has the permission
 ``polls.can_vote``::
 
     def my_view(request):
-        if not (request.user.is_authenticated() and request.user.has_perm('polls.can_vote')):
+        if not request.user.has_perm('polls.can_vote'):
             return HttpResponse("You can't vote in this poll.")
         # ...