diff --git a/tests/manual/widgets/crumblepath/tst_manual_widgets_crumblepath.cpp b/tests/manual/widgets/crumblepath/tst_manual_widgets_crumblepath.cpp
index b86884d6df1..06ba4b04bc4 100644
--- a/tests/manual/widgets/crumblepath/tst_manual_widgets_crumblepath.cpp
+++ b/tests/manual/widgets/crumblepath/tst_manual_widgets_crumblepath.cpp
@@ -93,7 +93,9 @@ QWidget *shrinkingCrumblePath()
 
 int main(int argc, char *argv[])
 {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif // Qt < 6
 
     QApplication app(argc, argv);
 
diff --git a/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp b/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
index c77a7109b11..67e406c5884 100644
--- a/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
+++ b/tests/manual/widgets/infolabel/tst_manual_widgets_infolabel.cpp
@@ -39,7 +39,9 @@ using namespace Utils;
 
 int main(int argc, char *argv[])
 {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif // Qt < 6
 
     QApplication app(argc, argv);
 
diff --git a/tests/manual/widgets/manhattanstyle/tst_manual_widgets_manhattanstyle.cpp b/tests/manual/widgets/manhattanstyle/tst_manual_widgets_manhattanstyle.cpp
index 59b5d34c926..155ce326452 100644
--- a/tests/manual/widgets/manhattanstyle/tst_manual_widgets_manhattanstyle.cpp
+++ b/tests/manual/widgets/manhattanstyle/tst_manual_widgets_manhattanstyle.cpp
@@ -123,8 +123,10 @@ static QWidget *centralWidget()
 
 int main(int argc, char *argv[])
 {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+#endif // Qt < 6
 
     QApplication app(argc, argv);
 
diff --git a/tests/manual/widgets/tracing/tst_manual_widgets_tracing.cpp b/tests/manual/widgets/tracing/tst_manual_widgets_tracing.cpp
index d027536e9e7..ff895a7b385 100644
--- a/tests/manual/widgets/tracing/tst_manual_widgets_tracing.cpp
+++ b/tests/manual/widgets/tracing/tst_manual_widgets_tracing.cpp
@@ -162,8 +162,10 @@ public:
 
 int main(int argc, char *argv[])
 {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+#endif // Qt < 6
 
     QApplication app(argc, argv);