diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Entity/Feed.php b/core/modules/aggregator/lib/Drupal/aggregator/Entity/Feed.php
index ca99fa6..13cd122 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Entity/Feed.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Entity/Feed.php
@@ -164,7 +164,7 @@ public function id() {
   /**
    * Implements Drupal\Core\Entity\EntityInterface::label().
    */
-  public function label($langcode = NULL) {
+  public function label() {
     return $this->get('title')->value;
   }
 
diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Entity/Item.php b/core/modules/aggregator/lib/Drupal/aggregator/Entity/Item.php
index 3007200..796ef6c 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Entity/Item.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Entity/Item.php
@@ -43,7 +43,7 @@ public function id() {
   /**
    * Implements Drupal\Core\Entity\EntityInterface::label().
    */
-  public function label($langcode = NULL) {
+  public function label() {
     return $this->get('title')->value;
   }
 
diff --git a/core/modules/block/lib/Drupal/block/Entity/Block.php b/core/modules/block/lib/Drupal/block/Entity/Block.php
index 44fa169..ad538c7 100644
--- a/core/modules/block/lib/Drupal/block/Entity/Block.php
+++ b/core/modules/block/lib/Drupal/block/Entity/Block.php
@@ -119,7 +119,7 @@ public function getPlugin() {
   /**
    * Overrides \Drupal\Core\Entity\Entity::label();
    */
-  public function label($langcode = NULL) {
+  public function label() {
     $settings = $this->get('settings');
     return $settings['label'];
   }
diff --git a/core/modules/editor/lib/Drupal/editor/Entity/Editor.php b/core/modules/editor/lib/Drupal/editor/Entity/Editor.php
index a7bc66c..7c425e4 100644
--- a/core/modules/editor/lib/Drupal/editor/Entity/Editor.php
+++ b/core/modules/editor/lib/Drupal/editor/Entity/Editor.php
@@ -69,7 +69,7 @@ public function id() {
   /**
    * Overrides Drupal\Core\Entity\Entity::label().
    */
-  public function label($langcode = NULL) {
+  public function label() {
     $format = entity_load('filter_format', $this->format);
     return $format->name;
   }
diff --git a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/Entity/EntityTest.php b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/Entity/EntityTest.php
index b4ad49b..cd3d27a 100644
--- a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/Entity/EntityTest.php
+++ b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/Entity/EntityTest.php
@@ -97,7 +97,7 @@ protected function init() {
   /**
    * Overrides Drupal\entity\Entity::label().
    */
-  public function label($langcode = NULL) {
+  public function label() {
     $info = $this->entityInfo();
     if (!isset($langcode)) {
       $langcode = $this->activeLangcode;
diff --git a/core/modules/views/lib/Drupal/views/Entity/View.php b/core/modules/views/lib/Drupal/views/Entity/View.php
index 86c9720..47acded 100644
--- a/core/modules/views/lib/Drupal/views/Entity/View.php
+++ b/core/modules/views/lib/Drupal/views/Entity/View.php
@@ -146,7 +146,7 @@ public function createDuplicate() {
    *
    * When a certain view doesn't have a label return the ID.
    */
-  public function label($langcode = NULL) {
+  public function label() {
     if (!$label = $this->get('label')) {
       $label = $this->id();
     }
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/ViewUI.php b/core/modules/views_ui/lib/Drupal/views_ui/ViewUI.php
index 61505ae..b8c43d4 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/ViewUI.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/ViewUI.php
@@ -898,7 +898,7 @@ public function uri() {
   /**
    * Implements \Drupal\Core\Entity\EntityInterface::label().
    */
-  public function label($langcode = NULL) {
+  public function label() {
     return $this->storage->label($langcode);
   }