diff --git a/classes/helper.php b/classes/helper.php
index 63bb626..7cf7a2d 100644
--- a/classes/helper.php
+++ b/classes/helper.php
@@ -91,7 +91,6 @@ public static function update_emailvars($templatetext, $subject, $course, $user,
         $course->category = is_number($course->category)
             ? core_course_category::get($course->category)->get_formatted_name() : $course->category;
 
-        $mod = clone $mod;
         if (!empty($mod->id)) {
             if ($DB->record_exists('course_modules', ['id' => $mod->id])) {
                 $module = $DB->get_record('course_modules', ['id' => $mod->id]);