diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -72,15 +72,20 @@
     contextMenu->addAction(unlockAction);
 
     // context menu signals
-    connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this,
-            SLOT(showMenu(QPoint)));
-    connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
-    connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
-    connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
-    connect(copyTransactionHashAction, SIGNAL(triggered()), this,
-            SLOT(copyTransactionHash()));
-    connect(lockAction, SIGNAL(triggered()), this, SLOT(lockCoin()));
-    connect(unlockAction, SIGNAL(triggered()), this, SLOT(unlockCoin()));
+    connect(ui->treeWidget, &QWidget::customContextMenuRequested, this,
+            &CoinControlDialog::showMenu);
+    connect(copyAddressAction, &QAction::triggered, this,
+            &CoinControlDialog::copyAddress);
+    connect(copyLabelAction, &QAction::triggered, this,
+            &CoinControlDialog::copyLabel);
+    connect(copyAmountAction, &QAction::triggered, this,
+            &CoinControlDialog::copyAmount);
+    connect(copyTransactionHashAction, &QAction::triggered, this,
+            &CoinControlDialog::copyTransactionHash);
+    connect(lockAction, &QAction::triggered, this,
+            &CoinControlDialog::lockCoin);
+    connect(unlockAction, &QAction::triggered, this,
+            &CoinControlDialog::unlockCoin);
 
     // clipboard actions
     QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
@@ -91,20 +96,20 @@
     QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
     QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
 
-    connect(clipboardQuantityAction, SIGNAL(triggered()), this,
-            SLOT(clipboardQuantity()));
-    connect(clipboardAmountAction, SIGNAL(triggered()), this,
-            SLOT(clipboardAmount()));
-    connect(clipboardFeeAction, SIGNAL(triggered()), this,
-            SLOT(clipboardFee()));
-    connect(clipboardAfterFeeAction, SIGNAL(triggered()), this,
-            SLOT(clipboardAfterFee()));
-    connect(clipboardBytesAction, SIGNAL(triggered()), this,
-            SLOT(clipboardBytes()));
-    connect(clipboardLowOutputAction, SIGNAL(triggered()), this,
-            SLOT(clipboardLowOutput()));
-    connect(clipboardChangeAction, SIGNAL(triggered()), this,
-            SLOT(clipboardChange()));
+    connect(clipboardQuantityAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardQuantity);
+    connect(clipboardAmountAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardAmount);
+    connect(clipboardFeeAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardFee);
+    connect(clipboardAfterFeeAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardAfterFee);
+    connect(clipboardBytesAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardBytes);
+    connect(clipboardLowOutputAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardLowOutput);
+    connect(clipboardChangeAction, &QAction::triggered, this,
+            &CoinControlDialog::clipboardChange);
 
     ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
     ui->labelCoinControlAmount->addAction(clipboardAmountAction);
@@ -115,27 +120,27 @@
     ui->labelCoinControlChange->addAction(clipboardChangeAction);
 
     // toggle tree/list mode
-    connect(ui->radioTreeMode, SIGNAL(toggled(bool)), this,
-            SLOT(radioTreeMode(bool)));
-    connect(ui->radioListMode, SIGNAL(toggled(bool)), this,
-            SLOT(radioListMode(bool)));
+    connect(ui->radioTreeMode, &QRadioButton::toggled, this,
+            &CoinControlDialog::radioTreeMode);
+    connect(ui->radioListMode, &QRadioButton::toggled, this,
+            &CoinControlDialog::radioListMode);
 
     // click on checkbox
-    connect(ui->treeWidget, SIGNAL(itemChanged(QTreeWidgetItem *, int)), this,
-            SLOT(viewItemChanged(QTreeWidgetItem *, int)));
+    connect(ui->treeWidget, &QTreeWidget::itemChanged, this,
+            &CoinControlDialog::viewItemChanged);
 
     // click on header
     ui->treeWidget->header()->setSectionsClickable(true);
-    connect(ui->treeWidget->header(), SIGNAL(sectionClicked(int)), this,
-            SLOT(headerSectionClicked(int)));
+    connect(ui->treeWidget->header(), &QHeaderView::sectionClicked, this,
+            &CoinControlDialog::headerSectionClicked);
 
     // ok button
-    connect(ui->buttonBox, SIGNAL(clicked(QAbstractButton *)), this,
-            SLOT(buttonBoxClicked(QAbstractButton *)));
+    connect(ui->buttonBox, &QDialogButtonBox::clicked, this,
+            &CoinControlDialog::buttonBoxClicked);
 
     // (un)select all
-    connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this,
-            SLOT(buttonSelectAllClicked()));
+    connect(ui->pushButtonSelectAll, &QPushButton::clicked, this,
+            &CoinControlDialog::buttonSelectAllClicked);
 
     ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
     ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 110);