diff -u b/site_map.module b/site_map.module
--- b/site_map.module
+++ b/site_map.module
@@ -197,7 +197,7 @@
 function site_map_page() {
   drupal_set_title(_site_map_title());
 
-  site_map_content();
+  return site_map_content();
 }
 
 /**