diff --git a/routes/guestbook.js b/routes/guestbook.js
index 084e8fb..d1b88f7 100644
--- a/routes/guestbook.js
+++ b/routes/guestbook.js
@@ -157,6 +157,9 @@ async function rss(req, res) {
 
     for (const record of data) {
         console.log(record);
+        if (record.email == null || record.email == undefined) {
+            record.email = 'no@email.com';
+        }
         if (record.hidemail)
             record.email = ('?'.repeat(record.email.split('@')[0].length)) + '@?.?';