4 files changed, 12 insertions, 7 deletions
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index 3002e0fe88..9b9585f993 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -41,6 +41,7 @@
 #endif // ENABLE_WALLET
 
 #include <boost/signals2/connection.hpp>
+#include <chrono>
 #include <memory>
 
 #include <QApplication>
@@ -410,10 +411,10 @@ void BitcoinApplication::initializeResult(bool success, interfaces::BlockAndHead
             connect(paymentServer, &PaymentServer::message, [this](const QString& title, const QString& message, unsigned int style) {
                 window->message(title, message, style);
             });
-            QTimer::singleShot(100, paymentServer, &PaymentServer::uiReady);
+            QTimer::singleShot(100ms, paymentServer, &PaymentServer::uiReady);
         }
 #endif
-        pollShutdownTimer->start(200);
+        pollShutdownTimer->start(200ms);
     } else {
         Q_EMIT splashFinished(); // Make sure splash screen doesn't stick around during shutdown
         requestShutdown();
diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index 177f45cb7b..c05571677c 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -19,6 +19,8 @@
 #include <netbase.h>
 #include <txdb.h> // for -dbcache defaults
 
+#include <chrono>
+
 #include <QDataWidgetMapper>
 #include <QDir>
 #include <QIntValidator>
@@ -362,7 +364,7 @@ void OptionsDialog::showRestartWarning(bool fPersistent)
         ui->statusLabel->setText(tr("This change would require a client restart."));
         // clear non-persistent status label after 10 seconds
         // Todo: should perhaps be a class attribute, if we extend the use of statusLabel
-        QTimer::singleShot(10000, this, &OptionsDialog::clearStatusLabel);
+        QTimer::singleShot(10s, this, &OptionsDialog::clearStatusLabel);
     }
 }
 
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
index cbaf7563cd..eb07d6d5ea 100644
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -24,11 +24,12 @@
 #include <node/ui_interface.h>
 #include <policy/fees.h>
 #include <txmempool.h>
+#include <validation.h>
 #include <wallet/coincontrol.h>
 #include <wallet/fees.h>
 #include <wallet/wallet.h>
 
-#include <validation.h>
+#include <chrono>
 
 #include <QFontMetrics>
 #include <QScrollBar>
@@ -1060,7 +1061,7 @@ SendConfirmationDialog::SendConfirmationDialog(const QString& title, const QStri
 int SendConfirmationDialog::exec()
 {
     updateButtons();
-    countDownTimer.start(1000);
+    countDownTimer.start(1s);
     return QMessageBox::exec();
 }
 
diff --git a/src/qt/walletcontroller.cpp b/src/qt/walletcontroller.cpp
index fa561e05db..cbe63f88cf 100644
--- a/src/qt/walletcontroller.cpp
+++ b/src/qt/walletcontroller.cpp
@@ -20,6 +20,7 @@
 #include <wallet/wallet.h>
 
 #include <algorithm>
+#include <chrono>
 
 #include <QApplication>
 #include <QMessageBox>
@@ -254,12 +255,12 @@ void CreateWalletActivity::createWallet()
         flags |= WALLET_FLAG_EXTERNAL_SIGNER;
     }
 
-    QTimer::singleShot(500, worker(), [this, name, flags] {
+    QTimer::singleShot(500ms, worker(), [this, name, flags] {
         std::unique_ptr<interfaces::Wallet> wallet = node().walletLoader().createWallet(name, m_passphrase, flags, m_error_message, m_warning_message);
 
         if (wallet) m_wallet_model = m_wallet_controller->getOrCreateWallet(std::move(wallet));
 
-        QTimer::singleShot(500, this, &CreateWalletActivity::finish);
+        QTimer::singleShot(500ms, this, &CreateWalletActivity::finish);
     });
 }