diff --git a/src/_includes/main/navbar.webc b/src/_includes/main/navbar.webc
index 9dd358b5..4fc08d97 100644
--- a/src/_includes/main/navbar.webc
+++ b/src/_includes/main/navbar.webc
@@ -62,12 +62,11 @@
 
 <script webc:keep webc:bucket="defer">
     // Make the navigation bar sticky
-    const header = document.querySelector(".main-header");
     const navbar = document.querySelector("navbar");
 
     window.addEventListener("scroll", e => {
         const scrollPos = window.scrollY || document.documentElement.scrollTop;
-        const stickyLine = header.scrollHeight - navbar.scrollHeight;
+        const stickyLine = document.querySelector(".main-header").scrollHeight - navbar.scrollHeight;
         if (scrollPos > stickyLine) {
                 navbar.classList.add("sticky-nav");
         } else {