diff --git a/lib/server/readMetadata.js b/lib/server/readMetadata.js
index 4a64ab301f..fd1e24551f 100644
--- a/lib/server/readMetadata.js
+++ b/lib/server/readMetadata.js
@@ -27,6 +27,7 @@ const SupportedHeaderFields = new Set([
   'original_id',
   'hide_title',
   'layout',
+  'custom_edit_url',
 ]);
 
 // Can have a custom docs path. Top level folder still needs to be in directory