diff --git a/question/type/shortanswer/questiontype.php b/question/type/shortanswer/questiontype.php
index 2f40f1aaf92e6..84fe5e05c26aa 100644
--- a/question/type/shortanswer/questiontype.php
+++ b/question/type/shortanswer/questiontype.php
@@ -354,10 +354,10 @@ function print_question_grading_details(&$question, &$state, $cmoptions, $option
         maximum grade available and a warning if a penalty was applied for the
         attempt and displays the overall grade obtained counting all previous
         responses (and penalties) */
-
+        global $QTYPES ;
         // MDL-7496 show correct answer after "Incorrect"
         $correctanswer = '';
-        if ($correctanswers = $this->get_correct_responses($question, $state)) {
+        if ($correctanswers =  $QTYPES[$question->qtype]->get_correct_responses($question, $state)) {
             if ($options->readonly && $options->correct_responses) {
                 $delimiter = '';
                 if ($correctanswers) {