diff --git a/src/views/pages/form.twig b/src/views/pages/form.twig
index f1fdf260..573461e6 100644
--- a/src/views/pages/form.twig
+++ b/src/views/pages/form.twig
@@ -9,7 +9,7 @@
   <section data-module="writing">
     <textarea name="module-settings" hidden>
       {
-        "page": {{ page | json_encode }}
+        "page": {{ page | json_encode | escape }}
       }
     </textarea>
     <header class="writing-header">