diff --git a/keystone/notifications.py b/keystone/notifications.py
index 725bc8f86e..6f010211da 100644
--- a/keystone/notifications.py
+++ b/keystone/notifications.py
@@ -37,12 +37,10 @@ class ManagerNotificationWrapper(object):
     ``Exception`` (such as ``keystone.exception.NotFound``).
 
     :param resource_type: type of resource being affected
-    :param host: host of the resource (optional)
     """
-    def __init__(self, operation, resource_type, host=None):
+    def __init__(self, operation, resource_type):
         self.operation = operation
         self.resource_type = resource_type
-        self.host = host
 
     def __call__(self, f):
         def wrapper(*args, **kwargs):
@@ -55,8 +53,7 @@ class ManagerNotificationWrapper(object):
                 _send_notification(
                     self.operation,
                     self.resource_type,
-                    args[1],  # f(self, resource_id, ...)
-                    self.host)
+                    args[1])  # f(self, resource_id, ...)
             return result
 
         return wrapper
@@ -131,7 +128,7 @@ def notify_event_callbacks(service, resource_type, operation, payload):
                 cb(service, resource_type, operation, payload)
 
 
-def _send_notification(operation, resource_type, resource_id, host=None):
+def _send_notification(operation, resource_type, resource_id):
     """Send notification to inform observers about the affected resource.
 
     This method doesn't raise an exception when sending the notification fails.
@@ -139,12 +136,11 @@ def _send_notification(operation, resource_type, resource_id, host=None):
     :param operation: operation being performed (created, updated, or deleted)
     :param resource_type: type of resource being operated on
     :param resource_id: ID of resource being operated on
-    :param host: resource host
     """
     context = {}
     payload = {'resource_info': resource_id}
     service = 'identity'
-    publisher_id = notifier_api.publisher_id(service, host=host)
+    publisher_id = notifier_api.publisher_id(service)
     event_type = '%(service)s.%(resource_type)s.%(operation)s' % {
         'service': service,
         'resource_type': resource_type,
diff --git a/keystone/tests/test_notifications.py b/keystone/tests/test_notifications.py
index b1befa2f91..5528fb39b1 100644
--- a/keystone/tests/test_notifications.py
+++ b/keystone/tests/test_notifications.py
@@ -37,14 +37,12 @@ class NotificationsWrapperTestCase(tests.TestCase):
 
         self.exp_resource_id = None
         self.exp_operation = None
-        self.exp_host = None
         self.send_notification_called = False
 
-        def fake_notify(operation, resource_type, resource_id, host=None):
+        def fake_notify(operation, resource_type, resource_id):
             self.assertEqual(self.exp_operation, operation)
             self.assertEqual(EXP_RESOURCE_TYPE, resource_type)
             self.assertEqual(self.exp_resource_id, resource_id)
-            self.assertEqual(self.exp_host, host)
             self.send_notification_called = True
 
         fixture = self.useFixture(moxstubout.MoxStubout())
@@ -62,7 +60,6 @@ class NotificationsWrapperTestCase(tests.TestCase):
         exp_resource_data = {
             'id': self.exp_resource_id,
             'key': uuid.uuid4().hex}
-        self.exp_host = None
 
         self.create_resource(self.exp_resource_id, exp_resource_data)
         self.assertTrue(self.send_notification_called)
@@ -77,7 +74,6 @@ class NotificationsWrapperTestCase(tests.TestCase):
         exp_resource_data = {
             'id': self.exp_resource_id,
             'key': uuid.uuid4().hex}
-        self.exp_host = None
 
         self.update_resource(self.exp_resource_id, exp_resource_data)
         self.assertTrue(self.send_notification_called)
@@ -89,7 +85,6 @@ class NotificationsWrapperTestCase(tests.TestCase):
     def test_resource_deleted_notification(self):
         self.exp_operation = 'deleted'
         self.exp_resource_id = uuid.uuid4().hex
-        self.exp_host = None
 
         self.delete_resource(self.exp_resource_id)
         self.assertTrue(self.send_notification_called)
@@ -136,7 +131,6 @@ class NotificationsTestCase(tests.TestCase):
         resource = uuid.uuid4().hex
         resource_type = EXP_RESOURCE_TYPE
         operation = 'created'
-        host = None
 
         # NOTE(ldbragst): Even though notifications._send_notification doesn't
         # contain logic that creates cases, this is suppose to test that
@@ -154,8 +148,7 @@ class NotificationsTestCase(tests.TestCase):
             self.assertEqual(exp_payload, payload)
 
         self.stubs.Set(notifier_api, 'notify', fake_notify)
-        notifications._send_notification(resource, resource_type, operation,
-                                         host=host)
+        notifications._send_notification(resource, resource_type, operation)
 
 
 class NotificationsForEntities(test_v3.RestfulTestCase):
@@ -167,7 +160,7 @@ class NotificationsForEntities(test_v3.RestfulTestCase):
         self.exp_resource_type = None
         self.send_notification_called = False
 
-        def fake_notify(operation, resource_type, resource_id, host=None):
+        def fake_notify(operation, resource_type, resource_id):
             self.exp_resource_id = resource_id
             self.exp_operation = operation
             self.exp_resource_type = resource_type