diff --git a/web/src/components/RecordingPlaylist.jsx b/web/src/components/RecordingPlaylist.jsx
index 07720869c..96182bb42 100644
--- a/web/src/components/RecordingPlaylist.jsx
+++ b/web/src/components/RecordingPlaylist.jsx
@@ -102,7 +102,7 @@ export function EventCard({ camera, event, delay }) {
     const end = fromUnixTime(event.end_time);
     const hours = differenceInHours(end, start);
     const minutes = differenceInMinutes(end, start) - hours * 60;
-    const seconds = differenceInSeconds(end, start) - hours * 60 - minutes * 60;
+    const seconds = differenceInSeconds(end, start) - hours * 60 * 60 - minutes * 60;
     duration = '';
     if (hours) duration += `${hours}h `;
     if (minutes) duration += `${minutes}m `;