diff --git a/rasa_addons/core/channels/rest.py b/rasa_addons/core/channels/rest.py
index fa6bd24777..e1519d4132 100644
--- a/rasa_addons/core/channels/rest.py
+++ b/rasa_addons/core/channels/rest.py
@@ -36,10 +36,11 @@ def _message(
             "quick_replies": quick_replies,
             "buttons": buttons,
             "attachment": attachment,
-            "custom": custom,
             "metadata": metadata,
         }
 
+        if custom: obj.update(custom)
+
         # filter out any values that are `None`
         return utils.remove_none_values(obj)
 
diff --git a/rasa_addons/core/channels/webchat.py b/rasa_addons/core/channels/webchat.py
index ae60560d97..751a004cc8 100644
--- a/rasa_addons/core/channels/webchat.py
+++ b/rasa_addons/core/channels/webchat.py
@@ -110,11 +110,11 @@ async def send_custom_json(
     ) -> None:
         """Sends custom json to the output"""
 
-        json_message.setdefault("room", recipient_id)
-
-        await self.sio.emit(
-            self.bot_message_evt, **json_message, metadata=kwargs.get("metadata", {})
-        )
+        message = {
+            **json_message,
+            "metadata": kwargs.get("metadata", {}),
+        }
+        await self._send_message(recipient_id, message)
 
     async def send_attachment(
         self, recipient_id: Text, attachment: Dict[Text, Any], **kwargs: Any