diff --git a/themes/bootstrap5/templates/search/advanced/layout.phtml b/themes/bootstrap5/templates/search/advanced/layout.phtml
index f3e45051b28..87997f2eb5c 100644
--- a/themes/bootstrap5/templates/search/advanced/layout.phtml
+++ b/themes/bootstrap5/templates/search/advanced/layout.phtml
@@ -85,7 +85,7 @@
         <input type="hidden" name="sort" value="<?=$this->escapeHtmlAttr($lastSort)?>">
       <?php endif; ?>
       <div class="clearfix">
-        <h2 class="pull-left flip"><?=$this->transEsc('Advanced Search')?></h2>
+        <h1 class="pull-left flip"><?=$this->transEsc('Advanced Search')?></h1>
         <div id="groupJoin" class="form-inline pull-right flip">
           <label for="groupJoinOptions"><?=$this->transEsc('search_match')?>:</label>
           <select id="groupJoinOptions" name="join" class="form-control">