diff --git a/src/qt/receiverequestdialog.cpp b/src/qt/receiverequestdialog.cpp
--- a/src/qt/receiverequestdialog.cpp
+++ b/src/qt/receiverequestdialog.cpp
@@ -30,10 +30,12 @@
 QRImageWidget::QRImageWidget(QWidget *parent) : QLabel(parent), contextMenu(0) {
     contextMenu = new QMenu(this);
     QAction *saveImageAction = new QAction(tr("&Save Image..."), this);
-    connect(saveImageAction, SIGNAL(triggered()), this, SLOT(saveImage()));
+    connect(saveImageAction, &QAction::triggered, this,
+            &QRImageWidget::saveImage);
     contextMenu->addAction(saveImageAction);
     QAction *copyImageAction = new QAction(tr("&Copy Image"), this);
-    connect(copyImageAction, SIGNAL(triggered()), this, SLOT(copyImage()));
+    connect(copyImageAction, &QAction::triggered, this,
+            &QRImageWidget::copyImage);
     contextMenu->addAction(copyImageAction);
 }
 
@@ -92,7 +94,8 @@
     ui->lblQRCode->setVisible(false);
 #endif
 
-    connect(ui->btnSaveAs, SIGNAL(clicked()), ui->lblQRCode, SLOT(saveImage()));
+    connect(ui->btnSaveAs, &QPushButton::clicked, ui->lblQRCode,
+            &QRImageWidget::saveImage);
 }
 
 ReceiveRequestDialog::~ReceiveRequestDialog() {
@@ -103,8 +106,8 @@
     this->model = _model;
 
     if (_model) {
-        connect(_model->getOptionsModel(), SIGNAL(displayUnitChanged(int)),
-                this, SLOT(update()));
+        connect(_model->getOptionsModel(), &OptionsModel::displayUnitChanged,
+                this, &ReceiveRequestDialog::update);
     }
 
     // update the display unit if necessary