diff --git a/mod/lesson/locallib.php b/mod/lesson/locallib.php
index 750a6fc6581..1a3ba153b84 100644
--- a/mod/lesson/locallib.php
+++ b/mod/lesson/locallib.php
@@ -2074,7 +2074,7 @@ abstract class lesson_page extends lesson_base {
                     if ($qattempts == 1) {
                         $result->feedback = $OUTPUT->box(get_string("firstwrong", "lesson"), 'feedback');
                     } else {
-                        $result->feedback = $OUTPUT->BOX(get_string("secondpluswrong", "lesson"), 'feedback');
+                        $result->feedback = $OUTPUT->box(get_string("secondpluswrong", "lesson"), 'feedback');
                     }
                 } else {
                     $class = 'response';