diff --git a/zaqar/api/v2/endpoints.py b/zaqar/api/v2/endpoints.py
index 20c1fb83a..9dd69933e 100644
--- a/zaqar/api/v2/endpoints.py
+++ b/zaqar/api/v2/endpoints.py
@@ -444,9 +444,6 @@ class Endpoints(object):
                                                 None)
             queue_default_ttl = queue_meta.get('_default_message_ttl')
 
-            # TODO(flwang): To avoid any unexpected regression issue, we just
-            # leave the _message_post_spec attribute of class as it's. It
-            # should be removed in Newton release.
             if queue_default_ttl:
                 _message_post_spec = (('ttl', int, queue_default_ttl),
                                       ('body', '*', None),)
diff --git a/zaqar/transport/wsgi/v2_0/messages.py b/zaqar/transport/wsgi/v2_0/messages.py
index ca45e74b8..5c4611739 100644
--- a/zaqar/transport/wsgi/v2_0/messages.py
+++ b/zaqar/transport/wsgi/v2_0/messages.py
@@ -37,7 +37,6 @@ class CollectionResource(object):
         '_queue_controller',
         '_wsgi_conf',
         '_validate',
-        '_message_post_spec',
         '_default_message_ttl'
     )
 
@@ -51,11 +50,6 @@ class CollectionResource(object):
         self._queue_controller = queue_controller
         self._default_message_ttl = default_message_ttl
 
-        self._message_post_spec = (
-            ('ttl', int, self._default_message_ttl),
-            ('body', '*', None),
-        )
-
     # ----------------------------------------------------------------------
     # Helpers
     # ----------------------------------------------------------------------
@@ -175,9 +169,6 @@ class CollectionResource(object):
             queue_max_msg_size = queue_meta.get('_max_messages_post_size')
             queue_default_ttl = queue_meta.get('_default_message_ttl')
 
-            # TODO(flwang): To avoid any unexpected regression issue, we just
-            # leave the _message_post_spec attribute of class as it's. It
-            # should be removed in Newton release.
             if queue_default_ttl:
                 message_post_spec = (('ttl', int, queue_default_ttl),
                                      ('body', '*', None),)