diff --git a/src/plugins/platforms/wayland/qwaylandwindow.cpp b/src/plugins/platforms/wayland/qwaylandwindow.cpp
index ecab8ffcca1..7d868b30bce 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow.cpp
+++ b/src/plugins/platforms/wayland/qwaylandwindow.cpp
@@ -785,7 +785,7 @@ static QWaylandWindow *closestShellSurfaceWindow(QWindow *window)
 {
     while (window) {
         auto w = static_cast<QWaylandWindow *>(window->handle());
-        if (w->shellSurface())
+        if (w && w->shellSurface())
             return w;
         window = window->transientParent() ? window->transientParent() : window->parent();
     }