diff --git a/mod/quiz/view.php b/mod/quiz/view.php
index 708eb15f231..909f8612c5d 100644
--- a/mod/quiz/view.php
+++ b/mod/quiz/view.php
@@ -181,7 +181,7 @@
 
         // Prepare table header
         $table = new html_table();
-        $table->class = 'generaltable quizattemptsummary';
+        $table->set_classes('generaltable quizattemptsummary');
         $table->head = array();
         $table->align = array();
         $table->size = array();