diff --git a/src/interfaces/wallet.h b/src/interfaces/wallet.h
index e29fefae565..4ab416f451f 100644
--- a/src/interfaces/wallet.h
+++ b/src/interfaces/wallet.h
@@ -183,7 +183,7 @@ public:
     virtual WalletTx getWalletTx(const uint256& txid) = 0;
 
     //! Get list of all wallet transactions.
-    virtual std::vector<WalletTx> getWalletTxs() = 0;
+    virtual std::set<WalletTx> getWalletTxs() = 0;
 
     //! Try to get updated status for a particular transaction, if possible without blocking.
     virtual bool tryGetTxStatus(const uint256& txid,
@@ -395,6 +395,8 @@ struct WalletTx
     int64_t time;
     std::map<std::string, std::string> value_map;
     bool is_coinbase;
+
+    bool operator<(const WalletTx& a) const { return tx->GetHash() < a.tx->GetHash(); }
 };
 
 //! Updated transaction status.
diff --git a/src/wallet/interfaces.cpp b/src/wallet/interfaces.cpp
index 23f91d9b3a4..5add1287172 100644
--- a/src/wallet/interfaces.cpp
+++ b/src/wallet/interfaces.cpp
@@ -318,13 +318,12 @@ public:
         }
         return {};
     }
-    std::vector<WalletTx> getWalletTxs() override
+    std::set<WalletTx> getWalletTxs() override
     {
         LOCK(m_wallet->cs_wallet);
-        std::vector<WalletTx> result;
-        result.reserve(m_wallet->mapWallet.size());
+        std::set<WalletTx> result;
         for (const auto& entry : m_wallet->mapWallet) {
-            result.emplace_back(MakeWalletTx(*m_wallet, entry.second));
+            result.emplace(MakeWalletTx(*m_wallet, entry.second));
         }
         return result;
     }