diff --git a/src/qt/winshutdownmonitor.cpp b/src/qt/winshutdownmonitor.cpp
index 0b5278c192d30..9ccd7028daceb 100644
--- a/src/qt/winshutdownmonitor.cpp
+++ b/src/qt/winshutdownmonitor.cpp
@@ -12,7 +12,11 @@
 
 // If we don't want a message to be processed by Qt, return true and set result to
 // the value that the window procedure should return. Otherwise return false.
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+bool WinShutdownMonitor::nativeEventFilter(const QByteArray &eventType, void *pMessage, qintptr *pnResult)
+#else
 bool WinShutdownMonitor::nativeEventFilter(const QByteArray &eventType, void *pMessage, long *pnResult)
+#endif
 {
        Q_UNUSED(eventType);
 
diff --git a/src/qt/winshutdownmonitor.h b/src/qt/winshutdownmonitor.h
index 060d8546e3921..a8b626065d7d8 100644
--- a/src/qt/winshutdownmonitor.h
+++ b/src/qt/winshutdownmonitor.h
@@ -20,7 +20,11 @@ class WinShutdownMonitor : public QAbstractNativeEventFilter
     WinShutdownMonitor(std::function<void()> shutdown_fn) : m_shutdown_fn{std::move(shutdown_fn)} {}
 
     /** Implements QAbstractNativeEventFilter interface for processing Windows messages */
+#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
+    bool nativeEventFilter(const QByteArray &eventType, void *pMessage, qintptr *pnResult) override;
+#else
     bool nativeEventFilter(const QByteArray &eventType, void *pMessage, long *pnResult) override;
+#endif
 
     /** Register the reason for blocking shutdown on Windows to allow clean client exit */
     static void registerShutdownBlockReason(const QString& strReason, const HWND& mainWinId);