diff --git a/horizon/middleware/base.py b/horizon/middleware/base.py
index b3e378af31..ebae6d3a11 100644
--- a/horizon/middleware/base.py
+++ b/horizon/middleware/base.py
@@ -47,12 +47,12 @@ class HorizonMiddleware(object):
         self.get_response = get_response
 
     def __call__(self, request):
-        self.process_request(request)
+        self._process_request(request)
         response = self.get_response(request)
-        response = self.process_response(request, response)
+        response = self._process_response(request, response)
         return response
 
-    def process_request(self, request):
+    def _process_request(self, request):
         """Adds data necessary for Horizon to function to the request."""
 
         request.horizon = {'dashboard': None,
@@ -147,11 +147,11 @@ class HorizonMiddleware(object):
             return shortcuts.redirect(exception.location)
 
     @staticmethod
-    def copy_headers(src, dst, headers):
+    def _copy_headers(src, dst, headers):
         for header in headers:
             dst[header] = src[header]
 
-    def process_response(self, request, response):
+    def _process_response(self, request, response):
         """Convert HttpResponseRedirect to HttpResponse if request is via ajax.
 
         This is to allow ajax request to redirect url.
@@ -189,8 +189,8 @@ class HorizonMiddleware(object):
                 redirect_response['X-Horizon-Location'] = response['location']
                 upload_url_key = 'X-File-Upload-URL'
                 if upload_url_key in response:
-                    self.copy_headers(response, redirect_response,
-                                      (upload_url_key, 'X-Auth-Token'))
+                    self._copy_headers(response, redirect_response,
+                                       (upload_url_key, 'X-Auth-Token'))
                 return redirect_response
             if queued_msgs:
                 # TODO(gabriel): When we have an async connection to the
diff --git a/horizon/middleware/operation_log.py b/horizon/middleware/operation_log.py
index 4119ff5670..87294f4807 100644
--- a/horizon/middleware/operation_log.py
+++ b/horizon/middleware/operation_log.py
@@ -81,10 +81,10 @@ class OperationLogMiddleware(object):
 
     def __call__(self, request):
         response = self.get_response(request)
-        response = self.process_response(request, response)
+        response = self._process_response(request, response)
         return response
 
-    def process_response(self, request, response):
+    def _process_response(self, request, response):
         """Log user operation."""
         log_format = self._get_log_format(request)
         if not log_format:
diff --git a/horizon/test/helpers.py b/horizon/test/helpers.py
index 2123426d02..dcff16b453 100644
--- a/horizon/test/helpers.py
+++ b/horizon/test/helpers.py
@@ -133,7 +133,7 @@ class TestCase(django_test.TestCase):
         # A dummy get_response function (which is not callable) is passed
         # because middlewares below are used only to populate request attrs.
         middleware.HorizonMiddleware('dummy_get_response') \
-            .process_request(self.request)
+            ._process_request(self.request)
         AuthenticationMiddleware('dummy_get_response') \
             .process_request(self.request)
         os.environ["HORIZON_TEST_RUN"] = "True"
diff --git a/horizon/test/unit/middleware/test_base.py b/horizon/test/unit/middleware/test_base.py
index 78db68d2e5..142543bf55 100644
--- a/horizon/test/unit/middleware/test_base.py
+++ b/horizon/test/unit/middleware/test_base.py
@@ -61,7 +61,7 @@ class MiddlewareTests(django_test.TestCase):
         response = HttpResponseRedirect(url)
         response.client = self.client
 
-        resp = mw.process_response(request, response)
+        resp = mw._process_response(request, response)
         self.assertEqual(200, resp.status_code)
         self.assertEqual(url, resp['X-Horizon-Location'])
 
@@ -71,12 +71,12 @@ class MiddlewareTests(django_test.TestCase):
 
         request = self.factory.get(url)
         request.session['django_timezone'] = 'America/Chicago'
-        mw.process_request(request)
+        mw._process_request(request)
         self.assertEqual(
             timezone.get_current_timezone_name(), 'America/Chicago')
         request.session['django_timezone'] = 'Europe/Paris'
-        mw.process_request(request)
+        mw._process_request(request)
         self.assertEqual(timezone.get_current_timezone_name(), 'Europe/Paris')
         request.session['django_timezone'] = 'UTC'
-        mw.process_request(request)
+        mw._process_request(request)
         self.assertEqual(timezone.get_current_timezone_name(), 'UTC')
diff --git a/horizon/test/unit/test_messages.py b/horizon/test/unit/test_messages.py
index bbd976d1a7..1a3d370dd5 100644
--- a/horizon/test/unit/test_messages.py
+++ b/horizon/test/unit/test_messages.py
@@ -35,7 +35,7 @@ class MessageTests(test.TestCase):
         self.assertItemsEqual(req.horizon['async_messages'], [expected])
         res = http.HttpResponse()
         res = middleware.HorizonMiddleware('dummy_get_response') \
-            .process_response(req, res)
+            ._process_response(req, res)
         self.assertEqual(json.dumps([expected]),
                          res['X-Horizon-Messages'])
 
@@ -50,6 +50,6 @@ class MessageTests(test.TestCase):
         self.assertItemsEqual(req.horizon['async_messages'], [expected])
         res = http.HttpResponse()
         res = middleware.HorizonMiddleware('dummy_get_response') \
-            .process_response(req, res)
+            ._process_response(req, res)
         self.assertEqual(json.dumps([expected]),
                          res['X-Horizon-Messages'])