diff --git a/test/runtime/samples/ondestroy-deep/destroyed.js b/test/runtime/samples/ondestroy-deep/destroyed.js
index 4a99a931d4..fe05c1d241 100644
--- a/test/runtime/samples/ondestroy-deep/destroyed.js
+++ b/test/runtime/samples/ondestroy-deep/destroyed.js
@@ -1,3 +1,3 @@
-export let destroyed = [];
+export const destroyed = [];
 
 export const reset = () => destroyed.length = 0;
\ No newline at end of file