diff --git a/mod/quiz/backup/moodle2/restore_quiz_stepslib.php b/mod/quiz/backup/moodle2/restore_quiz_stepslib.php
index 1cd3abb17e9..de7f1ebd667 100644
--- a/mod/quiz/backup/moodle2/restore_quiz_stepslib.php
+++ b/mod/quiz/backup/moodle2/restore_quiz_stepslib.php
@@ -265,7 +265,7 @@ class restore_quiz_activity_structure_step extends restore_questions_activity_st
             // There was a question_instance in the backup file for a question
             // that was not acutally in the quiz. Drop it.
             $this->log('question ' . $data->questionid . ' was associated with quiz ' .
-                    $quiz->id . ' but not actually used. ' .
+                    $this->get_new_parentid('quiz') . ' but not actually used. ' .
                     'The instance has been ignored.', backup::LOG_INFO);
             return;
         }