diff --git a/src/qt/sendcoinsentry.cpp b/src/qt/sendcoinsentry.cpp
--- a/src/qt/sendcoinsentry.cpp
+++ b/src/qt/sendcoinsentry.cpp
@@ -46,16 +46,18 @@
     ui->payTo_is->setFont(GUIUtil::fixedPitchFont());
 
     // Connect signals
-    connect(ui->payAmount, SIGNAL(valueChanged()), this,
-            SIGNAL(payAmountChanged()));
-    connect(ui->checkboxSubtractFeeFromAmount, SIGNAL(toggled(bool)), this,
-            SIGNAL(subtractFeeFromAmountChanged()));
-    connect(ui->deleteButton, SIGNAL(clicked()), this, SLOT(deleteClicked()));
-    connect(ui->deleteButton_is, SIGNAL(clicked()), this,
-            SLOT(deleteClicked()));
-    connect(ui->deleteButton_s, SIGNAL(clicked()), this, SLOT(deleteClicked()));
-    connect(ui->useAvailableBalanceButton, SIGNAL(clicked()), this,
-            SLOT(useAvailableBalanceClicked()));
+    connect(ui->payAmount, &BitcoinAmountField::valueChanged, this,
+            &SendCoinsEntry::payAmountChanged);
+    connect(ui->checkboxSubtractFeeFromAmount, &QCheckBox::toggled, this,
+            &SendCoinsEntry::subtractFeeFromAmountChanged);
+    connect(ui->deleteButton, &QPushButton::clicked, this,
+            &SendCoinsEntry::deleteClicked);
+    connect(ui->deleteButton_is, &QPushButton::clicked, this,
+            &SendCoinsEntry::deleteClicked);
+    connect(ui->deleteButton_s, &QPushButton::clicked, this,
+            &SendCoinsEntry::deleteClicked);
+    connect(ui->useAvailableBalanceButton, &QPushButton::clicked, this,
+            &SendCoinsEntry::useAvailableBalanceClicked);
 
     // Set the model properly.
     setModel(model);
@@ -100,8 +102,8 @@
     }
 
     if (_model && _model->getOptionsModel()) {
-        connect(_model->getOptionsModel(), SIGNAL(displayUnitChanged(int)),
-                this, SLOT(updateDisplayUnit()));
+        connect(_model->getOptionsModel(), &OptionsModel::displayUnitChanged,
+                this, &SendCoinsEntry::updateDisplayUnit);
     }
 
     clear();