diff --git a/public/grade/report/grader/lib.php b/public/grade/report/grader/lib.php
index 2e6cdf8b268..d22a00581d5 100644
--- a/public/grade/report/grader/lib.php
+++ b/public/grade/report/grader/lib.php
@@ -1297,7 +1297,7 @@ class grade_report_grader extends grade_report {
         $html = '';
 
         $fulltable = new html_table();
-        $fulltable->attributes['class'] = 'gradereport-grader-table d-none';
+        $fulltable->attributes['class'] = 'table gradereport-grader-table d-none';
         $fulltable->id = 'user-grades';
         $fulltable->caption = get_string('summarygrader', 'gradereport_grader');
         $fulltable->captionhide = true;