diff --git a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
index 08b2e17ce8c..eddc73d4dfe 100644
--- a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
+++ b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
@@ -1152,6 +1152,7 @@ void tst_QSpinBox::sizeHint()
 {
     QWidget *widget = new QWidget;
     QHBoxLayout *layout = new QHBoxLayout(widget);
+    widget->setLayout(layout);
     sizeHint_SpinBox *spinBox = new sizeHint_SpinBox;
     layout->addWidget(spinBox);
     widget->show();