diff --git a/apps/client/src/views/countdown/CountdownSubscriptions.tsx b/apps/client/src/views/countdown/CountdownSubscriptions.tsx
index eb5ef00ed..895621297 100644
--- a/apps/client/src/views/countdown/CountdownSubscriptions.tsx
+++ b/apps/client/src/views/countdown/CountdownSubscriptions.tsx
@@ -53,7 +53,10 @@ export default function CountdownSubscriptions({ subscribedEvents, goToEditMode
 
   const sections = useMemo(() => groupSubscriptionTargets(subscribedEvents), [subscribedEvents]);
 
-  // the group of the running event is pinned to the top of the list, the running event needs to clear it
+  // The group of the running event is pinned to the top of the list, the running event needs to clear it.
+  // This is measured rather than estimated: the card scales with the viewport (the font sizes are clamped
+  // against vw), it grows while live since the running event's title is added, and long titles wrap.
+  // Measured between 91px and 171px, so a constant would leave the running event behind the header.
   const getStickyOffset = useCallback(() => {
     const header = stickyHeaderRef.current;
     // account for the row margin, so that the rows do not touch