diff --git a/static/admin/config/collections/index-pages.js b/static/admin/config/collections/index-pages.js
index 1a07c4dd..346fad21 100644
--- a/static/admin/config/collections/index-pages.js
+++ b/static/admin/config/collections/index-pages.js
@@ -214,6 +214,7 @@ const IndexPagesCollection = {
               hint: "Für mehrtägige Veanstaltungen, nur sichtbar wenn eingestellt",
               widget: "datetime",
               required: false,
+              default: "",
               ...DateFormat,
             },
             {