diff --git a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
index efae27a4..38afedf7 100644
--- a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
+++ b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
@@ -1885,11 +1885,11 @@ std::string sidechain_net_handler_bitcoin::sign_transaction_psbt(const sidechain
 std::string sidechain_net_handler_bitcoin::sign_transaction_standalone(const sidechain_transaction_object &sto, bool &complete) {
    complete = false;
 
-   std::string pubkey = plugin.get_current_son_object().signing_key.at(sidechain);
+   std::string pubkey = plugin.get_current_son_object().sidechain_public_keys.at(sidechain);
    std::string prvkey = get_private_key(pubkey);
-   std::tx = sto.transaction;
+   std::string tx = sto.transaction;
 
-   std::tx_signature = "";
+   std::string tx_signature = "";
 
    complete = true;
    return tx_signature;