diff --git a/cmd/rpcdaemon/commands/send_transaction.go b/cmd/rpcdaemon/commands/send_transaction.go
index 3abc483df55..49fc1c24a99 100644
--- a/cmd/rpcdaemon/commands/send_transaction.go
+++ b/cmd/rpcdaemon/commands/send_transaction.go
@@ -48,6 +48,10 @@ func (api *APIImpl) SendRawTransaction(ctx context.Context, encodedTx hexutility
 		return common.Hash{}, err
 	}
 
+	if txn.Type() != types.LegacyTxType {
+		return common.Hash{}, errors.New("only legacy transactions are supported")
+	}
+
 	// If the transaction fee cap is already specified, ensure the
 	// fee of the given transaction is _reasonable_.
 	if err := checkTxFee(txn.GetPrice().ToBig(), txn.GetGas(), ethconfig.Defaults.RPCTxFeeCap); err != nil {