diff --git a/core/modules/path/src/Tests/PathAdminTest.php b/core/modules/path/src/Tests/PathAdminTest.php
index 610b909..1c85415 100644
--- a/core/modules/path/src/Tests/PathAdminTest.php
+++ b/core/modules/path/src/Tests/PathAdminTest.php
@@ -7,6 +7,8 @@
 
 namespace Drupal\path\Tests;
 
+use Drupal\Component\Utility\Unicode;
+
 /**
  * Tests the Path admin UI.
  *
@@ -39,21 +41,21 @@ public function testPathFiltering() {
     $node3 = $this->drupalCreateNode();
 
     // Create aliases.
-    $alias1 = '/' . $this->randomMachineName(8);
+    $alias1 = '/' . Unicode::strtolower($this->randomMachineName(8));
     $edit = array(
       'source' => '/node/' . $node1->id(),
       'alias' => $alias1,
     );
     $this->drupalPostForm('admin/config/search/path/add', $edit, t('Save'));
 
-    $alias2 = '/' . $this->randomMachineName(8);
+    $alias2 = '/' . Unicode::strtolower($this->randomMachineName(8));
     $edit = array(
       'source' => '/node/' . $node2->id(),
       'alias' => $alias2,
     );
     $this->drupalPostForm('admin/config/search/path/add', $edit, t('Save'));
 
-    $alias3 = '/' . $this->randomMachineName(4) . '/' . $this->randomMachineName(4);
+    $alias3 = '/' . Unicode::strtolower($this->randomMachineName(4)) . '/' . Unicode::strtolower($this->randomMachineName(4));
     $edit = array(
       'source' => '/node/' . $node3->id(),
       'alias' => $alias3,
diff --git a/core/modules/system/src/Tests/Path/AliasTest.php b/core/modules/system/src/Tests/Path/AliasTest.php
index 76cd859..b156921 100644
--- a/core/modules/system/src/Tests/Path/AliasTest.php
+++ b/core/modules/system/src/Tests/Path/AliasTest.php
@@ -109,7 +109,7 @@ function testLookupPath() {
     // Hook that clears cache is not executed with unit tests.
     \Drupal::service('path.alias_manager')->cacheClear();
 
-    $this->assertEqual($aliasManager->getAliasByPath($path['source']), Unicode::strtolower($path['alias']), 'English alias overrides language-neutral alias.');
+    $this->assertEqual($aliasManager->getAliasByPath($path['source']), $path['alias'], 'English alias overrides language-neutral alias.');
     $this->assertEqual($aliasManager->getPathByAlias($path['alias']), $path['source'], 'English source overrides language-neutral source.');
 
     // Create a language-neutral alias for the same path, again.
@@ -129,7 +129,7 @@ function testLookupPath() {
     $aliasStorage->save($path['source'], $path['alias'], $path['langcode']);
     $this->assertEqual($aliasManager->getAliasByPath($path['source']), "/users/Dries", 'English alias still returned after entering a LOLspeak alias.');
     // The LOLspeak alias should be returned if we really want LOLspeak.
-    $this->assertEqual($aliasManager->getAliasByPath($path['source'], 'xx-lolspeak'), '/lol', 'LOLspeak alias returned if we specify xx-lolspeak to the alias manager.');
+    $this->assertEqual($aliasManager->getAliasByPath($path['source'], 'xx-lolspeak'), '/LOL', 'LOLspeak alias returned if we specify xx-lolspeak to the alias manager.');
 
     // Create a new alias for this path in English, which should override the
     // previous alias for "user/1".