diff --git a/channels/binding/websockets.py b/channels/binding/websockets.py
index 56a1a6c..81a7ede 100644
--- a/channels/binding/websockets.py
+++ b/channels/binding/websockets.py
@@ -40,9 +40,7 @@ class WebsocketBinding(Binding):
             "data": self.serialize_data(instance),
             "model": self.model_label,
         }
-        # Encode for the stream
-        assert self.stream is not None
-        return WebsocketDemultiplexer.encode(self.stream, payload)
+        return payload
 
     def serialize_data(self, instance):
         """