diff --git a/src/gui/kernel/qguiapplication_p.h b/src/gui/kernel/qguiapplication_p.h
index 70571cf7511..ca4ed3f12e7 100644
--- a/src/gui/kernel/qguiapplication_p.h
+++ b/src/gui/kernel/qguiapplication_p.h
@@ -331,7 +331,9 @@ private:
 
     static QGuiApplicationPrivate *self;
     static int m_fakeMouseSourcePointId;
+#ifdef Q_OS_WIN
     QSharedPointer<QColorTrcLut> m_a8ColorProfile;
+#endif
     QSharedPointer<QColorTrcLut> m_a32ColorProfile;
 
     bool ownGlobalShareContext;