diff --git a/src/qt/askpassphrasedialog.cpp b/src/qt/askpassphrasedialog.cpp
--- a/src/qt/askpassphrasedialog.cpp
+++ b/src/qt/askpassphrasedialog.cpp
@@ -70,14 +70,14 @@
             break;
     }
     textChanged();
-    connect(ui->toggleShowPasswordButton, SIGNAL(toggled(bool)), this,
-            SLOT(toggleShowPassword(bool)));
-    connect(ui->passEdit1, SIGNAL(textChanged(QString)), this,
-            SLOT(textChanged()));
-    connect(ui->passEdit2, SIGNAL(textChanged(QString)), this,
-            SLOT(textChanged()));
-    connect(ui->passEdit3, SIGNAL(textChanged(QString)), this,
-            SLOT(textChanged()));
+    connect(ui->toggleShowPasswordButton, &QPushButton::toggled, this,
+            &AskPassphraseDialog::toggleShowPassword);
+    connect(ui->passEdit1, &QLineEdit::textChanged, this,
+            &AskPassphraseDialog::textChanged);
+    connect(ui->passEdit2, &QLineEdit::textChanged, this,
+            &AskPassphraseDialog::textChanged);
+    connect(ui->passEdit3, &QLineEdit::textChanged, this,
+            &AskPassphraseDialog::textChanged);
 }
 
 AskPassphraseDialog::~AskPassphraseDialog() {