diff --git a/mod/quiz/review.php b/mod/quiz/review.php
index 8ecae8930f6..431dc8d02a2 100644
--- a/mod/quiz/review.php
+++ b/mod/quiz/review.php
@@ -244,7 +244,7 @@ $output = $PAGE->get_renderer('mod_quiz');
 
 // Arrange for the navigation to be displayed.
 $navbc = $attemptobj->get_navigation_panel($output, 'quiz_review_nav_panel', $page, $showall);
-$firstregion = reset($PAGE->blocks->get_regions());
-$PAGE->blocks->add_fake_block($navbc, $firstregion);
+$regions = $PAGE->blocks->get_regions();
+$PAGE->blocks->add_fake_block($navbc, reset($regions));
 
 echo $output->review_page($attemptobj, $slots, $page, $showall, $lastpage, $options, $summarydata);
diff --git a/mod/quiz/summary.php b/mod/quiz/summary.php
index 869b4b1d75e..94b4d46abac 100644
--- a/mod/quiz/summary.php
+++ b/mod/quiz/summary.php
@@ -80,8 +80,8 @@ if (empty($attemptobj->get_quiz()->showblocks)) {
 }
 
 $navbc = $attemptobj->get_navigation_panel($output, 'quiz_attempt_nav_panel', -1);
-$firstregion = reset($PAGE->blocks->get_regions());
-$PAGE->blocks->add_fake_block($navbc, $firstregion);
+$regions = $PAGE->blocks->get_regions();
+$PAGE->blocks->add_fake_block($navbc, reset($regions));
 
 $PAGE->navbar->add(get_string('summaryofattempt', 'quiz'));
 $PAGE->set_title(format_string($attemptobj->get_quiz_name()));