diff --git a/themes/tabi/templates/atom.xml b/themes/tabi/templates/atom.xml
index 9956ad9..9e455fb 100644
--- a/themes/tabi/templates/atom.xml
+++ b/themes/tabi/templates/atom.xml
@@ -66,7 +66,9 @@
         {%- endif -%}
     " rel="alternate" type="text/html"/>
     <generator uri="https://www.getzola.org/">Zola</generator>
-    <updated>{{ last_updated | date(format="%+") }}</updated>
+        {%- if last_updated -%}
+        <updated>{{ last_updated | date(format="%+") }}</updated>
+        {%- endif -%}
     <id>{{ feed_url | safe }}</id>
     {%- for page in pages %}
     {%- if macros_settings::evaluate_setting_priority(setting="hide_from_feed", page=page, default_global_value=false) == "true" -%}