diff --git a/web/client.ts b/web/client.ts
index fdba5d29..7c7256f3 100644
--- a/web/client.ts
+++ b/web/client.ts
@@ -1111,7 +1111,7 @@ export class Client {
       const bodyEl = this.parent.parentElement;
       if (bodyEl) {
         bodyEl.removeAttribute("class");
-        if (enrichedMeta.pageDecoration.cssClasses) {
+        if (enrichedMeta.pageDecoration?.cssClasses) {
           bodyEl.className = enrichedMeta.pageDecoration.cssClasses.join(" ")
             .replaceAll(/[^a-zA-Z0-9-_ ]/g, "");
         }