diff --git a/src/plugins/platforms/wasm/qwasmscreen.cpp b/src/plugins/platforms/wasm/qwasmscreen.cpp
index f2eabfa486..e536bc0ee3 100644
--- a/src/plugins/platforms/wasm/qwasmscreen.cpp
+++ b/src/plugins/platforms/wasm/qwasmscreen.cpp
@@ -139,6 +139,8 @@ QPlatformCursor *QWasmScreen::cursor() const
 
 void QWasmScreen::resizeMaximizedWindows()
 {
+    if (!screen())
+        return;
     QPlatformScreen::resizeMaximizedWindows();
 }