diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -146,7 +146,7 @@
             ::tableRPC.appendCommand(m_command.name, &m_command);
         }
 
-        void disconnect() override final {
+        void disconnect() final {
             if (m_wrapped_command) {
                 m_wrapped_command = nullptr;
                 ::tableRPC.removeCommand(m_command.name, &m_command);
diff --git a/src/qt/addressbookpage.cpp b/src/qt/addressbookpage.cpp
--- a/src/qt/addressbookpage.cpp
+++ b/src/qt/addressbookpage.cpp
@@ -32,7 +32,7 @@
     }
 
 protected:
-    bool filterAcceptsRow(int row, const QModelIndex &parent) const {
+    bool filterAcceptsRow(int row, const QModelIndex &parent) const override {
         auto model = sourceModel();
         auto label = model->index(row, AddressTableModel::Label, parent);
 
diff --git a/src/qt/bantablemodel.h b/src/qt/bantablemodel.h
--- a/src/qt/bantablemodel.h
+++ b/src/qt/bantablemodel.h
@@ -60,9 +60,10 @@
                       const QModelIndex &parent) const override;
     Qt::ItemFlags flags(const QModelIndex &index) const override;
     void sort(int column, Qt::SortOrder order) override;
-    bool shouldShow();
     /*@}*/
 
+    bool shouldShow();
+
 public Q_SLOTS:
     void refresh();
 
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -295,7 +295,7 @@
     void keyEscapePressed();
 
 private:
-    bool eventFilter(QObject *object, QEvent *event);
+    bool eventFilter(QObject *object, QEvent *event) override;
 };
 
 /**
diff --git a/src/qt/overviewpage.cpp b/src/qt/overviewpage.cpp
--- a/src/qt/overviewpage.cpp
+++ b/src/qt/overviewpage.cpp
@@ -32,7 +32,7 @@
           platformStyle(_platformStyle) {}
 
     inline void paint(QPainter *painter, const QStyleOptionViewItem &option,
-                      const QModelIndex &index) const {
+                      const QModelIndex &index) const override {
         painter->save();
 
         QIcon icon = qvariant_cast<QIcon>(
@@ -105,7 +105,7 @@
     }
 
     inline QSize sizeHint(const QStyleOptionViewItem &option,
-                          const QModelIndex &index) const {
+                          const QModelIndex &index) const override {
         return QSize(DECORATION_SIZE, DECORATION_SIZE);
     }
 
diff --git a/src/qt/qrimagewidget.h b/src/qt/qrimagewidget.h
--- a/src/qt/qrimagewidget.h
+++ b/src/qt/qrimagewidget.h
@@ -36,8 +36,8 @@
     void copyImage();
 
 protected:
-    virtual void mousePressEvent(QMouseEvent *event);
-    virtual void contextMenuEvent(QContextMenuEvent *event);
+    virtual void mousePressEvent(QMouseEvent *event) override;
+    virtual void contextMenuEvent(QContextMenuEvent *event) override;
 
 private:
     QMenu *contextMenu;
diff --git a/src/qt/receivecoinsdialog.h b/src/qt/receivecoinsdialog.h
--- a/src/qt/receivecoinsdialog.h
+++ b/src/qt/receivecoinsdialog.h
@@ -46,11 +46,11 @@
 
 public Q_SLOTS:
     void clear();
-    void reject();
-    void accept();
+    void reject() override;
+    void accept() override;
 
 protected:
-    virtual void keyPressEvent(QKeyEvent *event);
+    virtual void keyPressEvent(QKeyEvent *event) override;
 
 private:
     Ui::ReceiveCoinsDialog *ui;
@@ -61,7 +61,7 @@
 
     QModelIndex selectedRow();
     void copyColumnToClipboard(int column);
-    virtual void resizeEvent(QResizeEvent *event);
+    virtual void resizeEvent(QResizeEvent *event) override;
 
 private Q_SLOTS:
     void on_receiveButton_clicked();
diff --git a/src/qt/recentrequeststablemodel.h b/src/qt/recentrequeststablemodel.h
--- a/src/qt/recentrequeststablemodel.h
+++ b/src/qt/recentrequeststablemodel.h
@@ -84,6 +84,7 @@
     bool removeRows(int row, int count,
                     const QModelIndex &parent = QModelIndex()) override;
     Qt::ItemFlags flags(const QModelIndex &index) const override;
+    void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
     /*@}*/
 
     const RecentRequestEntry &entry(int row) const { return list[row]; }
@@ -92,7 +93,6 @@
     void addNewRequest(RecentRequestEntry &recipient);
 
 public Q_SLOTS:
-    void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
     void updateDisplayUnit();
 
 private:
diff --git a/src/qt/sendcoinsdialog.h b/src/qt/sendcoinsdialog.h
--- a/src/qt/sendcoinsdialog.h
+++ b/src/qt/sendcoinsdialog.h
@@ -122,7 +122,7 @@
                            int secDelay = SEND_CONFIRM_DELAY,
                            const QString &confirmText = "Send",
                            QWidget *parent = nullptr);
-    int exec();
+    int exec() override;
 
 private Q_SLOTS:
     void countDown();
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp
--- a/src/script/descriptor.cpp
+++ b/src/script/descriptor.cpp
@@ -618,7 +618,7 @@
     }
 
     bool ToPrivateString(const SigningProvider &arg,
-                         std::string &out) const override final {
+                         std::string &out) const final {
         bool ret = ToStringHelper(&arg, out, true);
         out = AddChecksum(out);
         return ret;