diff --git a/src/doc/not_found.md b/src/doc/not_found.md
index d26fcfc0168d7..f0794fc0be378 100644
--- a/src/doc/not_found.md
+++ b/src/doc/not_found.md
@@ -84,7 +84,7 @@ function on_submit(event) {
     if (form['from'].value === 'duckduckgo') {
         document.location.href = form.action + '?q=' + encodeURIComponent(q + ' site:doc.rust-lang.org');
     } else if (form['from'].value === 'library') {
-        document.location.href = 'std/index.html?search=' + encodeURIComponent(q);
+        document.location.href = '/std/index.html?search=' + encodeURIComponent(q);
     }
 }