diff --git a/mod/quiz/renderer.php b/mod/quiz/renderer.php
index 14d5d793fa6..33d731f32d6 100644
--- a/mod/quiz/renderer.php
+++ b/mod/quiz/renderer.php
@@ -489,11 +489,11 @@ class mod_quiz_renderer extends plugin_renderer_base {
         $output .= $this->box_start();
 
         if ($message) {
-            $output .= html_writer('p', $message);
-            $output .= html_writer('p', get_string('windowclosing', 'quiz'));
+            $output .= html_writer::tag('p', $message);
+            $output .= html_writer::tag('p', get_string('windowclosing', 'quiz'));
             $delay = 5;
         } else {
-            $output .= html_writer('p', get_string('pleaseclose', 'quiz'));
+            $output .= html_writer::tag('p', get_string('pleaseclose', 'quiz'));
             $delay = 0;
         }
         $this->page->requires->js_function_call('M.mod_quiz.secure_window.close',