diff --git a/mod/quiz/report/grading/report.php b/mod/quiz/report/grading/report.php
index 5ced0607425..5aabe786072 100644
--- a/mod/quiz/report/grading/report.php
+++ b/mod/quiz/report/grading/report.php
@@ -71,7 +71,6 @@ class quiz_report extends quiz_default_report {
 
                 // If the state has changed save it and update the quiz grade
                 if ($state->changed) {
-                    $state->responses[''] = isset($state->responses['']) ? addslashes($state->responses['']) : ''; // should this go in save_question_session?
                     save_question_session($question, $state);
                     quiz_save_best_grade($quiz, $attempt->userid);
                 }