diff --git a/core/lib/Drupal/Core/Entity/EntityDisplayModeInterface.php b/core/lib/Drupal/Core/Entity/EntityDisplayModeInterface.php
index a92e779..0ed6b71 100644
--- a/core/lib/Drupal/Core/Entity/EntityDisplayModeInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityDisplayModeInterface.php
@@ -28,8 +28,7 @@ public function getTargetType();
    * @param string $target_entity_type
    *   The target entity type for this display mode.
    *
-   * @return \Drupal\Core\Entity\EntityDisplayModeInterface
-   *   The display mode object, for fluent interface.
+   * @return $this
    */
   public function setTargetType($target_entity_type);
 }
diff --git a/core/modules/system/src/Tests/DrupalKernel/DrupalKernelTest.php b/core/modules/system/src/Tests/DrupalKernel/DrupalKernelTest.php
index 3cb254d..ab6c224 100644
--- a/core/modules/system/src/Tests/DrupalKernel/DrupalKernelTest.php
+++ b/core/modules/system/src/Tests/DrupalKernel/DrupalKernelTest.php
@@ -57,7 +57,9 @@ protected function prepareConfigDirectories() {
    *   A list of modules to enable on the kernel.
    * @param bool $read_only
    *   Build the kernel in a read only state.
+   *
    * @return \Drupal\Core\DrupalKernel
+   *   New kernel for testing.
    */
   protected function getTestKernel(Request $request, array $modules_enabled = NULL, $read_only = FALSE) {
     // Manually create kernel to avoid replacing settings.