diff --git a/_includes/head.html b/_includes/head.html
index 4d80880c..6a411fbf 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -30,7 +30,7 @@
if (sm) {
for (const video of videos) video.play();
} else {
- videos[0].play();
+ videos[0]?.play();
}
function showAllPeople() {