diff -u b/core/lib/Drupal/Core/Config/Config.php b/core/lib/Drupal/Core/Config/Config.php
--- b/core/lib/Drupal/Core/Config/Config.php
+++ b/core/lib/Drupal/Core/Config/Config.php
@@ -68,9 +68,9 @@
    *   The typed configuration manager service.
    */
   public function __construct($name, StorageInterface $storage, EventDispatcherInterface $event_dispatcher, TypedConfigManagerInterface $typed_config) {
-    // Validate the configuration object name.
-    static::validateName($name);
-    $this->name = $name;
+    // Calling parent constructor is needed for properly validate the
+    // configuration object name.
+    parent::__construct($name);
     $this->storage = $storage;
     $this->eventDispatcher = $event_dispatcher;
     $this->typedConfigManager = $typed_config;
diff -u b/core/lib/Drupal/Core/Config/ConfigBase.php b/core/lib/Drupal/Core/Config/ConfigBase.php
--- b/core/lib/Drupal/Core/Config/ConfigBase.php
+++ b/core/lib/Drupal/Core/Config/ConfigBase.php
@@ -61,6 +61,18 @@
   const MAX_NAME_LENGTH = 250;
 
   /**
+   * Constructs a configuration object.
+   *
+   * @param string $name
+   *   The name of the configuration object being constructed.
+   */
+  public function __construct($name) {
+    // Validate the configuration object name.
+    static::validateName($name);
+    $this->name = $name;
+  }
+
+  /**
    * Returns the name of this configuration object.
    *
    * @return string

--- a/core/modules/language/src/Config/LanguageConfigOverride.php
+++ b/core/modules/language/src/Config/LanguageConfigOverride.php
@@ -41,7 +41,9 @@ class LanguageConfigOverride extends StorableConfigBase {
    *   The event dispatcher.
    */
   public function __construct($name, StorageInterface $storage, TypedConfigManagerInterface $typed_config, EventDispatcherInterface $event_dispatcher) {
-    $this->name = $name;
+    // Calling parent constructor is needed for properly validate the
+    // configuration object name.
+    parent::__construct($name);
     $this->storage = $storage;
     $this->typedConfigManager = $typed_config;
     $this->eventDispatcher = $event_dispatcher;