diff --git a/freqtrade/rpc/rpc.py b/freqtrade/rpc/rpc.py
index 8883a11b8..6bc779d05 100644
--- a/freqtrade/rpc/rpc.py
+++ b/freqtrade/rpc/rpc.py
@@ -1094,7 +1094,7 @@ class RPC:
             trade = Trade.get_trades(trade_filter=[Trade.id == trade_id]).first()
             if not trade:
                 logger.warning("delete trade: Invalid argument received")
-                raise RPCException("invalid argument")
+                raise RPCException(f"Trade with id '{trade_id}' not found.")
 
             # Try cancelling regular order if that exists
             for open_order in trade.open_orders:
diff --git a/tests/rpc/test_rpc.py b/tests/rpc/test_rpc.py
index d8fe14d1a..3c8490d44 100644
--- a/tests/rpc/test_rpc.py
+++ b/tests/rpc/test_rpc.py
@@ -393,7 +393,7 @@ def test_rpc_delete_trade(mocker, default_conf, fee, markets, caplog, is_short):
     freqtradebot.strategy.order_types["stoploss_on_exchange"] = True
     create_mock_trades(fee, is_short)
     rpc = RPC(freqtradebot)
-    with pytest.raises(RPCException, match="invalid argument"):
+    with pytest.raises(RPCException, match="Trade with id '200' not found."):
         rpc._rpc_delete("200")
 
     trades = Trade.session.scalars(select(Trade)).all()