diff --git a/src/common/QskRgbPalette.h b/src/common/QskRgbPalette.h
index d411e346..6cc12bbc 100644
--- a/src/common/QskRgbPalette.h
+++ b/src/common/QskRgbPalette.h
@@ -11,7 +11,10 @@
 #include <qcolor.h>
 
 class QskGradientStop;
-template< typename T > class QVector;
+
+#if QT_VERSION < QT_VERSION_CHECK( 6, 0, 0 )
+    template< typename T > class QVector;
+#endif
 
 class QSK_EXPORT QskRgbPalette
 {