diff --git a/src/plugins/platforms/windows/qwindowstheme.cpp b/src/plugins/platforms/windows/qwindowstheme.cpp
index 918a4823380..56f0db7c9e7 100644
--- a/src/plugins/platforms/windows/qwindowstheme.cpp
+++ b/src/plugins/platforms/windows/qwindowstheme.cpp
@@ -483,7 +483,7 @@ QWindowsTheme *QWindowsTheme::m_instance = nullptr;
 QWindowsTheme::QWindowsTheme()
 {
     m_instance = this;
-    s_colorScheme = Qt::ColorScheme::Unknown;
+    s_colorScheme = Qt::ColorScheme::Unknown; // Used inside QWindowsTheme::effectiveColorScheme();
     s_colorScheme = QWindowsTheme::effectiveColorScheme();
     std::fill(m_fonts, m_fonts + NFonts, nullptr);
     std::fill(m_palettes, m_palettes + NPalettes, nullptr);