diff --git a/core/lib/Drupal/Core/CoreBundle.php b/core/lib/Drupal/Core/CoreBundle.php
index af957a2..2076707 100644
--- a/core/lib/Drupal/Core/CoreBundle.php
+++ b/core/lib/Drupal/Core/CoreBundle.php
@@ -156,8 +156,6 @@ public function build(ContainerBuilder $container) {
       ->addArgument(new Reference('path.alias_manager'))
       ->addArgument(new Reference('cache.path'));
 
-    $container->register('path.alias_manager.memory', 'Drupal\Core\Path\MemoryAliasManager');
-
     $container->register('path.crud', 'Drupal\Core\Path\Path')
       ->addArgument(new Reference('database'))
       ->addArgument(new Reference('path.alias_manager'));
diff --git a/core/modules/edit/lib/Drupal/edit/Tests/MetadataGeneratorTest.php b/core/modules/edit/lib/Drupal/edit/Tests/MetadataGeneratorTest.php
index a8cec27..ddfba6c 100644
--- a/core/modules/edit/lib/Drupal/edit/Tests/MetadataGeneratorTest.php
+++ b/core/modules/edit/lib/Drupal/edit/Tests/MetadataGeneratorTest.php
@@ -125,7 +125,6 @@ function testSimpleEntityType() {
   }
 
   function testEditorWithCustomMetadata() {
-    $this->installSchema('system', 'url_alias');
     $this->enableModules(array('user', 'filter'));
 
     // Enable edit_test module so that the WYSIWYG Create.js PropertyEditor
diff --git a/core/modules/editor/lib/Drupal/editor/Tests/EditorManagerTest.php b/core/modules/editor/lib/Drupal/editor/Tests/EditorManagerTest.php
index f85f176..7a7c79e 100644
--- a/core/modules/editor/lib/Drupal/editor/Tests/EditorManagerTest.php
+++ b/core/modules/editor/lib/Drupal/editor/Tests/EditorManagerTest.php
@@ -42,7 +42,6 @@ function setUp() {
     parent::setUp();
 
     // Install the Filter module.
-    $this->installSchema('system', 'url_alias');
     $this->enableModules(array('user', 'filter'));
 
     // Add text formats.
diff --git a/core/modules/filter/lib/Drupal/filter/Tests/FilterDefaultConfigTest.php b/core/modules/filter/lib/Drupal/filter/Tests/FilterDefaultConfigTest.php
index fd37fb8..57a2cdb 100644
--- a/core/modules/filter/lib/Drupal/filter/Tests/FilterDefaultConfigTest.php
+++ b/core/modules/filter/lib/Drupal/filter/Tests/FilterDefaultConfigTest.php
@@ -27,8 +27,6 @@ public static function getInfo() {
   function setUp() {
     parent::setUp();
     $this->enableModules(array('user'));
-    // filter_permission() calls into url() to output a link in the description.
-    $this->installSchema('system', 'url_alias');
   }
 
   /**
diff --git a/core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php
index 7c93af9..b3b6098 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php
@@ -154,6 +154,11 @@ public function containerBuild($container) {
         ->register('keyvalue', 'Drupal\Core\KeyValueStore\KeyValueFactory')
         ->addArgument(new Reference('service_container'));
     }
+
+
+    // Register a memory only path alias manager.
+    $container->register('path.alias_manager.memory', 'Drupal\Core\Path\MemoryAliasManager');
+
     $container->register('path.alias_manager.cached', 'Drupal\Core\CacheDecorator\AliasManagerCacheDecorator')
       ->addArgument(new Reference('path.alias_manager.memory'))
       ->addArgument(new Reference('cache.path'));