diff --git a/src/wallet/monero_wallet_core.cpp b/src/wallet/monero_wallet_core.cpp
index 3559393..5888c73 100644
--- a/src/wallet/monero_wallet_core.cpp
+++ b/src/wallet/monero_wallet_core.cpp
@@ -2063,7 +2063,7 @@ namespace monero {
     }
 
     // link tx set and return
-    shared_ptr<monero_tx_set> tx_set;
+    shared_ptr<monero_tx_set> tx_set = make_shared<monero_tx_set>();
     tx_set->m_txs = txs;
     for (int i = 0; i < txs.size(); i++) txs[i]->m_tx_set = tx_set;
     if (!multisig_tx_hex.empty()) tx_set->m_multisig_tx_hex = multisig_tx_hex;