diff --git a/config.php b/config.php
index 8d97779..50a4543 100755
--- a/config.php
+++ b/config.php
@@ -105,6 +105,9 @@ try {
     }
 
     $sidebarHtml = '<ul class="category-tree">' . renderTree($categoryTree) . '</ul>';
+    if (strlen($sidebarHtml) > 50000) { // If too large, use menu
+        $sidebarHtml = '<ul class="nav flex-column nav-pills"><li class="nav-item"><a class="nav-link" href="#" data-route="/">Overview</a></li><li class="nav-item"><a class="nav-link" href="#" data-route="/categories">Categories</a></li><li class="nav-item"><a class="nav-link" href="#" data-route="/parts">Parts</a></li></ul>';
+    }
 } catch (Exception $e) {
     error_log('Error building category tree: ' . $e->getMessage());
     $sidebarHtml = '<ul class="nav flex-column nav-pills"><li class="nav-item"><a class="nav-link" href="#" data-route="/">Overview</a></li><li class="nav-item"><a class="nav-link" href="#" data-route="/categories">Categories</a></li><li class="nav-item"><a class="nav-link" href="#" data-route="/parts">Parts</a></li></ul>';