diff --git a/bot/vikingbot/agent/context.py b/bot/vikingbot/agent/context.py
index 25570043..a989cdb5 100644
--- a/bot/vikingbot/agent/context.py
+++ b/bot/vikingbot/agent/context.py
@@ -303,7 +303,10 @@ def add_assistant_message(
         Returns:
             Updated message list.
         """
-        msg: dict[str, Any] = {"role": "assistant", "content": content or ""}
+        msg: dict[str, Any] = {"role": "assistant"}
+
+        if content:
+            msg["content"] = content
 
         if tool_calls:
             msg["tool_calls"] = tool_calls
diff --git a/bot/vikingbot/channels/telegram.py b/bot/vikingbot/channels/telegram.py
index 2e76a32d..e0c2f2e0 100644
--- a/bot/vikingbot/channels/telegram.py
+++ b/bot/vikingbot/channels/telegram.py
@@ -99,11 +99,11 @@ class TelegramChannel(BaseChannel):
 
     def __init__(
         self,
-        config: TelegramConfig,
+        config: TelegramChannelConfig,
         bus: MessageBus,
         groq_api_key: str = "",
     ):
-        super().__init__(config, bus, **kwargs)
+        super().__init__(config, bus)
         self.config: TelegramChannelConfig = config
         self.groq_api_key = groq_api_key
         self._app: Application | None = None