3 files changed, 6 insertions, 4 deletions
diff --git a/src/plugins/platforms/wayland/qwaylandshmwindow.cpp b/src/plugins/platforms/wayland/qwaylandshmwindow.cpp
index 10c90d1c157..c102ae11336 100644
--- a/src/plugins/platforms/wayland/qwaylandshmwindow.cpp
+++ b/src/plugins/platforms/wayland/qwaylandshmwindow.cpp
@@ -31,13 +31,15 @@ QWaylandWindow::WindowType QWaylandShmWindow::windowType() const
     return QWaylandWindow::Shm;
 }
 
-void QWaylandShmWindow::setWindowFlags(Qt::WindowFlags flags)
+bool QWaylandShmWindow::createDecoration()
 {
-    QWaylandWindow::setWindowFlags(flags);
+    bool rc = QWaylandWindow::createDecoration();
 
     const QSurfaceFormat format = window()->requestedFormat();
     if (!format.hasAlpha())
         mSurfaceFormat.setAlphaBufferSize(mWindowDecorationEnabled ? 8 : 0);
+
+    return rc;
 }
 
 }
diff --git a/src/plugins/platforms/wayland/qwaylandshmwindow_p.h b/src/plugins/platforms/wayland/qwaylandshmwindow_p.h
index dab9e1e5350..36c8ff45022 100644
--- a/src/plugins/platforms/wayland/qwaylandshmwindow_p.h
+++ b/src/plugins/platforms/wayland/qwaylandshmwindow_p.h
@@ -30,7 +30,7 @@ public:
 
     WindowType windowType() const override;
 
-    void setWindowFlags(Qt::WindowFlags flags) override;
+    bool createDecoration() override;
 };
 
 }
diff --git a/src/plugins/platforms/wayland/qwaylandwindow_p.h b/src/plugins/platforms/wayland/qwaylandwindow_p.h
index a8451bd9995..9d3dc9c6e05 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow_p.h
+++ b/src/plugins/platforms/wayland/qwaylandwindow_p.h
@@ -190,7 +190,7 @@ public:
                                      const QPointF &global, Qt::MouseButtons buttons,
                                      Qt::KeyboardModifiers modifiers);
 
-    bool createDecoration();
+    virtual bool createDecoration();
 
 #if QT_CONFIG(cursor)
     void restoreMouseCursor(QWaylandInputDevice *device);