diff --git a/site/src/layouts/Base.astro b/site/src/layouts/Base.astro
index e29e2d2..5817e61 100644
--- a/site/src/layouts/Base.astro
+++ b/site/src/layouts/Base.astro
@@ -822,7 +822,7 @@ try {
           stravaStatus.textContent = 'Waiting for Strava authorisation…';
 
           // postMessage listener — works cross-origin (callback may be on a different subdomain)
-          function onStravaMsg(e: MessageEvent) {
+          function onStravaMsg(e) {
             if (!e.data || e.data.stravaAuth === undefined) return;
             window.removeEventListener('message', onStravaMsg);
             clearInterval(closedPoll);