diff -u b/core/modules/forum/src/Tests/ForumTest.php b/core/modules/forum/src/Tests/ForumTest.php
--- b/core/modules/forum/src/Tests/ForumTest.php
+++ b/core/modules/forum/src/Tests/ForumTest.php
@@ -307,7 +307,7 @@
// Verify the "edit forum" link exists and functions correctly.
$this->drupalGet('admin/structure/forum');
$this->clickLink('edit forum');
- $this->assertRaw('Edit General discussion in Forums vocabulary', 'Followed the link to edit the forum');
+ $this->assertRaw('Edit ' . $this->forum['name'] . ' in Forums vocabulary', 'Followed the link to edit the forum');
// Navigate back to forum structure page.
$this->drupalGet('admin/structure/forum');
// Create second forum in container, destined to be deleted below.
@@ -401,7 +401,7 @@
*/
function createForum($type, $parent = 0) {
// Generate a random name/description.
- $name = $this->randomMachineName(10);
+ $name = 'f' . $this->randomMachineName(10);
$description = $this->randomMachineName(100);
$edit = array(