diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 60e9e499264..9c09bc2d4ac 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -2637,12 +2637,13 @@ void QGuiApplicationPrivate::processSafeAreaMarginsChangedEvent(QWindowSystemInt
 
 void QGuiApplicationPrivate::processThemeChanged(QWindowSystemInterfacePrivate::ThemeChangeEvent *tce)
 {
-    QStyleHintsPrivate::get(QGuiApplication::styleHints())->setColorScheme(colorScheme());
     if (self)
         self->handleThemeChanged();
 
     QIconPrivate::clearIconCache();
 
+    QStyleHintsPrivate::get(QGuiApplication::styleHints())->setColorScheme(colorScheme());
+
     QEvent themeChangeEvent(QEvent::ThemeChange);
     const QWindowList windows = tce->window ? QWindowList{tce->window} : window_list;
     for (auto *window : windows)
diff --git a/src/gui/kernel/qguiapplication_p.h b/src/gui/kernel/qguiapplication_p.h
index 14a81daed52..c96cbdd01f8 100644
--- a/src/gui/kernel/qguiapplication_p.h
+++ b/src/gui/kernel/qguiapplication_p.h
@@ -320,6 +320,8 @@ public:
 
     static void updatePalette();
 
+    static Qt::ColorScheme colorScheme();
+
 protected:
     virtual void handleThemeChanged();
 
@@ -336,8 +338,6 @@ private:
 
     friend class QDragManager;
 
-    static Qt::ColorScheme colorScheme();
-
     static QGuiApplicationPrivate *self;
     static int m_fakeMouseSourcePointId;
 #ifdef Q_OS_WIN
diff --git a/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp b/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
index 184378e4e11..dc6cd188e8c 100644
--- a/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
+++ b/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp
@@ -4808,7 +4808,7 @@ void QWindowsVistaStyle::polish(QPalette &pal)
 {
     Q_D(QWindowsVistaStyle);
 
-    if (qApp->styleHints()->colorScheme() == Qt::ColorScheme::Dark) {
+    if (QGuiApplicationPrivate::colorScheme() == Qt::ColorScheme::Dark) {
         // System runs in dark mode, but the Vista style cannot use a dark palette.
         // Overwrite with the light system palette.
         using QWindowsApplication = QNativeInterface::Private::QWindowsApplication;