diff --git a/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php b/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
index 2477684..53330ec 100644
--- a/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
+++ b/core/lib/Drupal/Core/Config/Schema/ConfigSchemaDiscovery.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Discovery\ConfigSchemaYamlDiscovery.
+ * Contains \Drupal\Core\Config\Schema\ConfigSchemaDiscovery.
  */
 
 namespace Drupal\Core\Config\Schema;
@@ -26,13 +26,13 @@ class ConfigSchemaDiscovery implements DiscoveryInterface {
   protected $schemaStorage;
 
   /**
-   * Construct a ConfigSchemaDiscovery object
+   * Constructs a ConfigSchemaDiscovery object.
    *
-   * @param $schemaStorage
+   * @param $schema_storage
    *   The storage object to use for reading schema data.
    */
-  function __construct(StorageInterface $schemaStorage) {
-    $this->schemaStorage = $schemaStorage;
+  function __construct(StorageInterface $schema_storage) {
+    $this->schemaStorage = $schema_storage;
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Config/TypedConfigManager.php b/core/lib/Drupal/Core/Config/TypedConfigManager.php
index 7bbbc11..b520dd8 100644
--- a/core/lib/Drupal/Core/Config/TypedConfigManager.php
+++ b/core/lib/Drupal/Core/Config/TypedConfigManager.php
@@ -9,12 +9,9 @@
 
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\Cache\CacheBackendInterface;
-use Drupal\Core\TypedData\TypedDataManager;
-
-// Schema discovery and decorators
 use Drupal\Core\Config\Schema\ConfigSchemaDiscovery;
-use Drupal\Core\Plugin\Discovery\YamlDiscovery;
 use Drupal\Core\Plugin\Discovery\AlterDecorator;
+use Drupal\Core\TypedData\TypedDataManager;
 
 /**
  * Manages config type plugins.
@@ -56,7 +53,6 @@ public function __construct(StorageInterface $configStorage, StorageInterface $s
     $this->configStorage = $configStorage;
     $this->schemaStorage = $schemaStorage;
     $this->setCacheBackend($cache, 'typed_config_definitions');
-    // Set discovery with alterdecorator.
     $this->discovery = new AlterDecorator(new ConfigSchemaDiscovery($schemaStorage), 'config_schema_info');
   }
 
diff --git a/core/modules/config_translation/config_translation.api.php b/core/modules/config_translation/config_translation.api.php
index a7db185..20d7097 100644
--- a/core/modules/config_translation/config_translation.api.php
+++ b/core/modules/config_translation/config_translation.api.php
@@ -99,7 +99,7 @@ function hook_config_translation_info_alter(&$info) {
  *   Associative array of configuration type definitions keyed by schema type
  *   names. The elements are themselves array with information about the type.
  */
-function hook_config_translation_type_info_alter(&$definitions) {
+function hook_config_schema_info_alter(&$definitions) {
   // Enhance the text and date type definitions with classes to generate proper
   // form elements in ConfigTranslationFormBase. Other translatable types will
   // appear as a one line textfield.
diff --git a/core/modules/config_translation/config_translation.module b/core/modules/config_translation/config_translation.module
index f95373c..9aa1b25 100644
--- a/core/modules/config_translation/config_translation.module
+++ b/core/modules/config_translation/config_translation.module
@@ -192,9 +192,9 @@ function config_translation_entity_operation(EntityInterface $entity) {
 }
 
 /**
- * Implements hook_config_translation_type_info_alter().
+ * Implements hook_config_schema_info_alter().
  */
-function config_translation_config_translation_type_info_alter(&$definitions) {
+function config_translation_config_schema_info_alter(&$definitions) {
   // Enhance the text and date type definitions with classes to generate proper
   // form elements in ConfigTranslationFormBase. Other translatable types will
   // appear as a one line textfield.
diff --git a/core/modules/config_translation/src/Form/ConfigTranslationFormBase.php b/core/modules/config_translation/src/Form/ConfigTranslationFormBase.php
index 5b6125a..a14c585 100644
--- a/core/modules/config_translation/src/Form/ConfigTranslationFormBase.php
+++ b/core/modules/config_translation/src/Form/ConfigTranslationFormBase.php
@@ -49,13 +49,6 @@
   protected $localeStorage;
 
   /**
-   * The module handler to invoke the alter hook.
-   *
-   * @var \Drupal\Core\Extension\ModuleHandlerInterface
-   */
-  protected $moduleHandler;
-
-  /**
    * The mapper for configuration translation.
    *
    * @var \Drupal\config_translation\ConfigMapperInterface
@@ -99,14 +92,11 @@
    *   The configuration mapper manager.
    * @param \Drupal\locale\StringStorageInterface $locale_storage
    *   The translation storage object.
-   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
-   *   The module handler to invoke the alter hook.
    */
-  public function __construct(TypedConfigManagerInterface $typed_config_manager, ConfigMapperManagerInterface $config_mapper_manager, StringStorageInterface $locale_storage, ModuleHandlerInterface $module_handler, ConfigurableLanguageManagerInterface $language_manager) {
+  public function __construct(TypedConfigManagerInterface $typed_config_manager, ConfigMapperManagerInterface $config_mapper_manager, StringStorageInterface $locale_storage, ConfigurableLanguageManagerInterface $language_manager) {
     $this->typedConfigManager = $typed_config_manager;
     $this->configMapperManager = $config_mapper_manager;
     $this->localeStorage = $locale_storage;
-    $this->moduleHandler = $module_handler;
     $this->languageManager = $language_manager;
   }
 
@@ -118,7 +108,6 @@ public static function create(ContainerInterface $container) {
       $container->get('config.typed'),
       $container->get('plugin.manager.config_translation.mapper'),
       $container->get('locale.storage'),
-      $container->get('module_handler'),
       $container->get('language_manager')
     );
   }
@@ -311,13 +300,6 @@ protected function buildConfigForm(Element $schema, $config_data, $base_config_d
       else {
         $definition = $element->getDataDefinition();
 
-        // Invoke hook_config_translation_type_info_alter() implementations to
-        // alter the configuration types.
-        $definitions = array(
-          $definition['type'] => &$definition,
-        );
-        $this->moduleHandler->alter('config_translation_type_info', $definitions);
-
         // Create form element only for translatable items.
         if (!isset($definition['translatable']) || !isset($definition['type'])) {
           continue;