diff --git a/website/canvas.html b/website/canvas.html
index da0c701..322e34b 100644
--- a/website/canvas.html
+++ b/website/canvas.html
@@ -3067,7 +3067,7 @@
 
 			// Wire history revert
 			document.querySelector("rstack-history-panel")?.addEventListener("revert-requested", (e) => {
-				const { hash } = (e as CustomEvent).detail;
+				const hash = e.detail?.hash;
 				if (hash) sync.revertToHash(hash);
 			});