diff --git a/packages/svelte/tests/runtime-legacy/samples/window-binding-scroll-store/_config.js b/packages/svelte/tests/runtime-legacy/samples/window-binding-scroll-store/_config.js
index b9ea2fb27b..115c3cfd38 100644
--- a/packages/svelte/tests/runtime-legacy/samples/window-binding-scroll-store/_config.js
+++ b/packages/svelte/tests/runtime-legacy/samples/window-binding-scroll-store/_config.js
@@ -9,8 +9,7 @@ export default test({
 		Object.defineProperties(window, {
 			scrollY: {
 				value: 0,
-				configurable: true,
-				writable: true
+				configurable: true
 			}
 		});
 		original_scrollTo = window.scrollTo;