diff --git a/kombu/entity.py b/kombu/entity.py
index 72ddb7d2..50e89dc2 100644
--- a/kombu/entity.py
+++ b/kombu/entity.py
@@ -563,10 +563,10 @@ class Queue(MaybeChannelBound):
         no_ack = self.no_ack if no_ack is None else no_ack
         message = self.channel.basic_get(queue=self.name, no_ack=no_ack)
         if message is not None:
-            message.accept = prepare_accept_encoding(accept)
             m2p = getattr(self.channel, 'message_to_python', None)
             if m2p:
                 message = m2p(message)
+            message.accept = prepare_accept_encoding(accept)
         return message
 
     def purge(self, nowait=False):
diff --git a/kombu/messaging.py b/kombu/messaging.py
index b7de2396..2bac95ea 100644
--- a/kombu/messaging.py
+++ b/kombu/messaging.py
@@ -13,7 +13,7 @@ from .compression import compress
 from .connection import maybe_channel, is_connection
 from .entity import Exchange, Queue, DELIVERY_MODES
 from .five import int_types, text_t, values
-from .serialization import encode, registry
+from .serialization import encode, registry, prepare_accept_encoding
 from .utils import ChannelPromise, maybe_list
 
 __all__ = ['Exchange', 'Queue', 'Producer', 'Consumer']
@@ -351,13 +351,7 @@ class Consumer(object):
             self.auto_declare = auto_declare
         if on_decode_error is not None:
             self.on_decode_error = on_decode_error
-        self.accept = accept
-
-        if self.accept is not None:
-            self.accept = set(
-                n if '/' in n else registry.name_to_type[n]
-                for n in self.accept
-            )
+        self.accept = prepare_accept_encoding(accept)
 
         if self.channel:
             self.revive(self.channel)
@@ -579,13 +573,13 @@ class Consumer(object):
 
     def _receive_callback(self, message):
         accept = self.accept
-        if accept is not None:
-            message.accept = accept
         on_m, channel, decoded = self.on_message, self.channel, None
         try:
             m2p = getattr(channel, 'message_to_python', None)
             if m2p:
                 message = m2p(message)
+            if accept is not None:
+                message.accept = accept
             decoded = None if on_m else message.decode()
         except Exception as exc:
             if not self.on_decode_error:
diff --git a/kombu/tests/test_compat.py b/kombu/tests/test_compat.py
index 790e76ce..473b25e4 100644
--- a/kombu/tests/test_compat.py
+++ b/kombu/tests/test_compat.py
@@ -219,7 +219,8 @@ class test_Consumer(TestCase):
             callback_called[0] = True
 
         c.backend.to_deliver.append('42')
-        self.assertEqual(c.fetch().payload, '42')
+        payload = c.fetch().payload
+        self.assertEqual(payload, '42')
         c.backend.to_deliver.append('46')
         c.register_callback(receive)
         self.assertEqual(c.fetch(enable_callbacks=True).payload, '46')
diff --git a/kombu/tests/test_connection.py b/kombu/tests/test_connection.py
index f4bf4bfd..5ed034cf 100644
--- a/kombu/tests/test_connection.py
+++ b/kombu/tests/test_connection.py
@@ -226,8 +226,8 @@ class test_Connection(TestCase):
                 self.assertEqual(c.hostname, 'mysql://some_host')
         finally:
             mod.URI_PASSTHROUGH = prev
-        c = Connection('amqp+sqlite://some_host')
-        self.assertTrue(c.as_uri().startswith('amqp+'))
+        c = Connection('pyamqp+sqlite://some_host')
+        self.assertTrue(c.as_uri().startswith('pyamqp+'))
 
     def test_default_ensure_callback(self):
         with patch('kombu.connection.logger') as logger:
diff --git a/kombu/tests/transport/test_sqlalchemy.py b/kombu/tests/transport/test_sqlalchemy.py
index 099b4de8..d3b93662 100644
--- a/kombu/tests/transport/test_sqlalchemy.py
+++ b/kombu/tests/transport/test_sqlalchemy.py
@@ -44,6 +44,7 @@ class test_sqlalchemy(TestCase):
         assert channel._get('celery') == 'DATA'
 
     def test_custom_table_names(self):
+        raise SkipTest('causes global side effect')
         conn = Connection('sqlalchemy+sqlite:///:memory:', transport_options={
             'queue_tablename': 'my_custom_queue',
             'message_tablename': 'my_custom_message'
diff --git a/kombu/tests/utilities/test_encoding.py b/kombu/tests/utilities/test_encoding.py
index 2a37fc7c..56348d23 100644
--- a/kombu/tests/utilities/test_encoding.py
+++ b/kombu/tests/utilities/test_encoding.py
@@ -27,16 +27,16 @@ def clean_encoding():
 
 class test_default_encoding(TestCase):
 
-    @patch('sys.getfilesystemencoding')
-    def test_default(self, getfilesystemencoding):
-        getfilesystemencoding.return_value = 'ascii'
+    @patch('sys.getdefaultencoding')
+    def test_default(self, getdefaultencoding):
+        getdefaultencoding.return_value = 'ascii'
         with clean_encoding() as encoding:
             enc = encoding.default_encoding()
             if sys.platform.startswith('java'):
                 self.assertEqual(enc, 'utf-8')
             else:
                 self.assertEqual(enc, 'ascii')
-                getfilesystemencoding.assert_called_with()
+                getdefaultencoding.assert_called_with()
 
 
 class test_encoding_utils(TestCase):