diff --git a/freqtrade/rpc/telegram.py b/freqtrade/rpc/telegram.py
index 8c988d570..4a759f6ec 100644
--- a/freqtrade/rpc/telegram.py
+++ b/freqtrade/rpc/telegram.py
@@ -6,6 +6,7 @@ This module manage Telegram communication
 import json
 import logging
 import re
+from copy import deepcopy
 from dataclasses import dataclass
 from datetime import date, datetime, timedelta
 from functools import partial
@@ -374,7 +375,7 @@ class Telegram(RPCHandler):
             message += f"\n*Duration:* `{msg['duration']} ({msg['duration_min']:.1f} min)`"
         return message
 
-    def compose_message(self, msg: Dict[str, Any], msg_type: RPCMessageType) -> str:
+    def compose_message(self, msg: Dict[str, Any], msg_type: RPCMessageType) -> Optional[str]:
         if msg_type in [RPCMessageType.ENTRY, RPCMessageType.ENTRY_FILL]:
             message = self._format_entry_msg(msg)
 
@@ -411,7 +412,8 @@ class Telegram(RPCHandler):
         elif msg_type == RPCMessageType.STRATEGY_MSG:
             message = f"{msg['msg']}"
         else:
-            raise NotImplementedError(f"Unknown message type: {msg_type}")
+            logger.debug("Unknown message type: %s", msg_type)
+            return None
         return message
 
     def send_msg(self, msg: Dict[str, Any]) -> None:
@@ -438,9 +440,9 @@ class Telegram(RPCHandler):
             # Notification disabled
             return
 
-        message = self.compose_message(msg, msg_type)
-
-        self._send_msg(message, disable_notification=(noti == 'silent'))
+        message = self.compose_message(deepcopy(msg), msg_type)
+        if message:
+            self._send_msg(message, disable_notification=(noti == 'silent'))
 
     def _get_sell_emoji(self, msg):
         """
diff --git a/tests/rpc/test_rpc_telegram.py b/tests/rpc/test_rpc_telegram.py
index cde7025a7..f2e490dff 100644
--- a/tests/rpc/test_rpc_telegram.py
+++ b/tests/rpc/test_rpc_telegram.py
@@ -2138,11 +2138,11 @@ def test_send_msg_strategy_msg_notification(default_conf, mocker) -> None:
 
 
 def test_send_msg_unknown_type(default_conf, mocker) -> None:
-    telegram, _, _ = get_telegram_testobject(mocker, default_conf)
-    with pytest.raises(NotImplementedError, match=r'Unknown message type: None'):
-        telegram.send_msg({
-            'type': None,
-        })
+    telegram, _, msg_mock = get_telegram_testobject(mocker, default_conf)
+    telegram.send_msg({
+        'type': None,
+    })
+    msg_mock.call_count == 0
 
 
 @pytest.mark.parametrize('message_type,enter,enter_signal,leverage', [