diff --git a/site/snippets/calendar-strip.php b/site/snippets/calendar-strip.php
index 3f0a734..18a36d8 100644
--- a/site/snippets/calendar-strip.php
+++ b/site/snippets/calendar-strip.php
@@ -80,7 +80,7 @@
               <p><strong x-html="`<strong>${session.title}</strong>`"></strong></p>
               <p x-html="session.authors"></p>
             </div>
-            <div x-text="`${session.duration}`"></div>
+            <div x-text="session.duration ? session.duration : ''"></div>
             <div x-text="`${session.place}`"></div>
             <template x-if="!session.ticketingUrl">
               <div class="session__info">