diff --git a/src/qt/addresstablemodel.cpp b/src/qt/addresstablemodel.cpp
--- a/src/qt/addresstablemodel.cpp
+++ b/src/qt/addresstablemodel.cpp
@@ -84,23 +84,23 @@
                 QString::fromStdString(EncodeCashAddr(
                     address.dest, parent->walletModel->getChainParams()))));
         }
-        // qLowerBound() and qUpperBound() require our cachedAddressTable list
-        // to be sorted in asc order. Even though the map is already sorted this
-        // re-sorting step is needed because the originating map is sorted by
-        // binary address, not by base58() address.
-        qSort(cachedAddressTable.begin(), cachedAddressTable.end(),
-              AddressTableEntryLessThan());
+        // std::lower_bound() and std::upper_bound() require our
+        // cachedAddressTable list to be sorted in asc order Even though the map
+        // is already sorted this re-sorting step is needed because the
+        // originating map is sorted by binary address, not by base58() address.
+        std::sort(cachedAddressTable.begin(), cachedAddressTable.end(),
+                  AddressTableEntryLessThan());
     }
 
     void updateEntry(const QString &address, const QString &label, bool isMine,
                      const QString &purpose, int status) {
         // Find address / label in model
-        QList<AddressTableEntry>::iterator lower =
-            qLowerBound(cachedAddressTable.begin(), cachedAddressTable.end(),
-                        address, AddressTableEntryLessThan());
-        QList<AddressTableEntry>::iterator upper =
-            qUpperBound(cachedAddressTable.begin(), cachedAddressTable.end(),
-                        address, AddressTableEntryLessThan());
+        QList<AddressTableEntry>::iterator lower = std::lower_bound(
+            cachedAddressTable.begin(), cachedAddressTable.end(), address,
+            AddressTableEntryLessThan());
+        QList<AddressTableEntry>::iterator upper = std::upper_bound(
+            cachedAddressTable.begin(), cachedAddressTable.end(), address,
+            AddressTableEntryLessThan());
         int lowerIndex = (lower - cachedAddressTable.begin());
         int upperIndex = (upper - cachedAddressTable.begin());
         bool inModel = (lower != upper);
diff --git a/src/qt/transactiontablemodel.cpp b/src/qt/transactiontablemodel.cpp
--- a/src/qt/transactiontablemodel.cpp
+++ b/src/qt/transactiontablemodel.cpp
@@ -20,6 +20,8 @@
 #include <util/system.h>
 #include <validation.h>
 
+#include <algorithm>
+
 #include <QColor>
 #include <QDateTime>
 #include <QDebug>
@@ -89,9 +91,9 @@
                         QString::number(status);
 
         // Find bounds of this transaction in model
-        QList<TransactionRecord>::iterator lower = qLowerBound(
+        QList<TransactionRecord>::iterator lower = std::lower_bound(
             cachedWallet.begin(), cachedWallet.end(), txid, TxLessThan());
-        QList<TransactionRecord>::iterator upper = qUpperBound(
+        QList<TransactionRecord>::iterator upper = std::upper_bound(
             cachedWallet.begin(), cachedWallet.end(), txid, TxLessThan());
         int lowerIndex = (lower - cachedWallet.begin());
         int upperIndex = (upper - cachedWallet.begin());