diff --git a/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php b/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
index 481a1ad..29740ce 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
@@ -408,10 +408,12 @@ function testBreadCrumbs() {
     $this->assertBreadcrumb('admin', $trail, t('Access denied'));
     $this->assertResponse(403);
 
-    $trail += array('admin' => t('Administration'));
+    // Since the 'admin' path is not accessible, we still expect
+    // only the Home link.
     $this->assertBreadcrumb('admin/reports', $trail, t('Reports'));
     $this->assertNoResponse(403);
 
+    // Since the Reports page is accessible, that will show.
     $trail += array('admin/reports' => t('Reports'));
     $this->assertBreadcrumb('admin/reports/dblog', $trail, t('Recent log messages'));
     $this->assertNoResponse(403);