diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 5f906948902..c8d581f765e 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -3217,7 +3217,7 @@ EOD;
             'size' => 13, 'tabindex' => -1, 'id' => 'id_q_' . $id, 'class' => 'form-control');
 
         $contents = html_writer::tag('label', get_string('enteryoursearchquery', 'search'),
-            array('for' => 'id_q_' . $id, 'class' => 'accesshide')) . html_writer::tag('input', '', $inputattrs);
+            array('for' => 'id_q_' . $id, 'class' => 'accesshide')) . html_writer::empty_tag('input', $inputattrs);
         if ($this->page->context && $this->page->context->contextlevel !== CONTEXT_SYSTEM) {
             $contents .= html_writer::empty_tag('input', ['type' => 'hidden',
                     'name' => 'context', 'value' => $this->page->context->id]);