diff --git a/app/javascript/editor/editor.ts b/app/javascript/editor/editor.ts
index be1180fe..b509be7f 100644
--- a/app/javascript/editor/editor.ts
+++ b/app/javascript/editor/editor.ts
@@ -281,7 +281,7 @@ document.addEventListener("turbolinks:load", () => {
   const flash = document.querySelector<HTMLElement>('.js-flash')
 
   if (flash) {
-    const keys = JSON.parse(flash.dataset.keys || '')
+    const keys = JSON.parse(flash.dataset.keys || '[]')
 
     switch (flash.dataset.target) {
     case 'editor':