2 files changed, 3 insertions, 2 deletions
diff --git a/examples/widgets/widgets/tetrix/tetrixwindow.cpp b/examples/widgets/widgets/tetrix/tetrixwindow.cpp
index 7e951aceb8..970a38c1dc 100644
--- a/examples/widgets/widgets/tetrix/tetrixwindow.cpp
+++ b/examples/widgets/widgets/tetrix/tetrixwindow.cpp
@@ -54,7 +54,8 @@
 #include "tetrixwindow.h"
 
 //! [0]
-TetrixWindow::TetrixWindow()
+TetrixWindow::TetrixWindow(QWidget *parent)
+    : QWidget(parent)
 {
     board = new TetrixBoard;
 //! [0]
diff --git a/examples/widgets/widgets/tetrix/tetrixwindow.h b/examples/widgets/widgets/tetrix/tetrixwindow.h
index a21cef2ecf..02226ffe1c 100644
--- a/examples/widgets/widgets/tetrix/tetrixwindow.h
+++ b/examples/widgets/widgets/tetrix/tetrixwindow.h
@@ -67,7 +67,7 @@ class TetrixWindow : public QWidget
     Q_OBJECT
 
 public:
-    TetrixWindow();
+    TetrixWindow(QWidget *parent = nullptr);
 
 private:
     QLabel *createLabel(const QString &text);