diff --git a/src/gui/components/_legacy.py b/src/gui/components/_legacy.py
index 49d9b20..6903762 100644
--- a/src/gui/components/_legacy.py
+++ b/src/gui/components/_legacy.py
@@ -619,7 +619,15 @@ def render_sticky_footer() -> None:
       div.id = 'datatools-sticky-footer';
       var a = doc.createElement('a');
       a.className = 'datatools-sticky-footer-link';
-      a.href = 'home';
+      // Navigate to the app root (``/``) instead of ``/home``. The
+      // home page is registered with ``default=True``, which serves
+      // it at the root URL. ``/home`` is NOT a recognized URL on
+      // every Streamlit minor version even with ``url_path="home"``
+      // — some builds reserve the alias only for non-default pages.
+      // Using ``./`` is robust against both: it resolves to the
+      // current document's directory, which on a single-segment
+      // tool-page URL like ``/01_deduplicator`` is the server root.
+      a.href = './';
       a.target = '_self';
       a.textContent = label;
       div.appendChild(a);