diff --git a/src/plugins/platforms/wayland/qwaylandwindow.cpp b/src/plugins/platforms/wayland/qwaylandwindow.cpp
index 75942a238f4..2be24111d2a 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow.cpp
+++ b/src/plugins/platforms/wayland/qwaylandwindow.cpp
@@ -933,7 +933,7 @@ QPointF QWaylandWindow::mapFromWlSurface(const QPointF &surfacePosition) const
     return QPointF(surfacePosition.x() - margins.left(), surfacePosition.y() - margins.top());
 }
 
-wl_surface *QWaylandWindow::wlSurface()
+wl_surface *QWaylandWindow::wlSurface() const
 {
     QReadLocker locker(&mSurfaceLock);
     return mSurface ? mSurface->object() : nullptr;
diff --git a/src/plugins/platforms/wayland/qwaylandwindow_p.h b/src/plugins/platforms/wayland/qwaylandwindow_p.h
index c2815cb8e55..981a26cb944 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow_p.h
+++ b/src/plugins/platforms/wayland/qwaylandwindow_p.h
@@ -129,10 +129,10 @@ public:
     QPointF mapFromWlSurface(const QPointF &surfacePosition) const;
 
     QWaylandSurface *waylandSurface() const { return mSurface.data(); }
-    ::wl_surface *wlSurface();
+    ::wl_surface *wlSurface() const;
     ::wl_surface *surface() const override
     {
-        return const_cast<QWaylandWindow *>(this)->wlSurface();
+        return wlSurface();
     }
     static QWaylandWindow *fromWlSurface(::wl_surface *surface);