diff --git a/static/scripts/site.js b/static/scripts/site.js
index b8638e8..950c411 100644
--- a/static/scripts/site.js
+++ b/static/scripts/site.js
@@ -9,8 +9,10 @@ window.addEventListener("DOMContentLoaded", () => {
   }
   siteHeader.classList.add("visible");
 
-  const documentReferrer = new URL(document.referrer);
-  if (documentReferrer.pathname === "/") {
-    siteHeader.classList.add("animated");
-  }
+  try {
+    const documentReferrer = new URL(document.referrer);
+    if (documentReferrer.pathname === "/") {
+      siteHeader.classList.add("animated");
+    }
+  } catch { }
 });