diff --git a/core/lib/Drupal/Core/Entity/EntityFieldManager.php b/core/lib/Drupal/Core/Entity/EntityFieldManager.php
index 025d92cca1ebaafe12676fb80c16f45dfc6a472b..f847cfa3840bb99cfab6044ded65e7e57308b888 100644
--- a/core/lib/Drupal/Core/Entity/EntityFieldManager.php
+++ b/core/lib/Drupal/Core/Entity/EntityFieldManager.php
@@ -231,6 +231,7 @@ protected function buildBaseFieldDefinitions($entity_type_id) {
         ->setLabel($this->t('Default revision'))
         ->setDescription($this->t('A flag indicating whether this was a default revision when it was saved.'))
         ->setStorageRequired(TRUE)
+        ->setInternal(TRUE)
         ->setTranslatable(FALSE)
         ->setRevisionable(TRUE);
     }
diff --git a/core/modules/hal/tests/src/Kernel/EntityTranslationNormalizeTest.php b/core/modules/hal/tests/src/Kernel/EntityTranslationNormalizeTest.php
index 2597af4affc13bd1e1ab077573a287a8e7c14c06..3e27ef637bb45713286c82d77e0687945e00f00b 100644
--- a/core/modules/hal/tests/src/Kernel/EntityTranslationNormalizeTest.php
+++ b/core/modules/hal/tests/src/Kernel/EntityTranslationNormalizeTest.php
@@ -83,6 +83,8 @@ public function testNodeTranslation() {
     $this->assertSame($node->getTitle(), $denormalized_node->getTitle());
     $this->assertSame($translation->getTitle(), $denormalized_node->getTranslation('de')->getTitle());
 
+    $original_values['revision_default'] = [];
+    $original_translation_values['revision_default'] = [];
     $this->assertEquals($original_values, $denormalized_node->toArray(), 'Node values are restored after normalizing and denormalizing.');
     $this->assertEquals($original_translation_values, $denormalized_node->getTranslation('en')->toArray(), 'Node values are restored after normalizing and denormalizing.');
   }
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
index f5b3fdcc15659d0493ad979549cf43fe0185bf05..57668179404192b9af4acafdc20ff1f9e8834e91 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/BlockContent/BlockContentResourceTestBase.php
@@ -122,11 +122,6 @@ protected function getExpectedNormalizedEntity() {
           'value' => TRUE,
         ],
       ],
-      'revision_default' => [
-        [
-          'value' => TRUE,
-        ],
-      ],
       'default_langcode' => [
         [
           'value' => TRUE,
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Media/MediaResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Media/MediaResourceTestBase.php
index 414b3ebb858124450228216aa6057ed06ea1444a..40f7997251bc060d6e6b9dae36692564fbb83a8c 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Media/MediaResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Media/MediaResourceTestBase.php
@@ -212,11 +212,6 @@ protected function getExpectedNormalizedEntity() {
           'value' => TRUE,
         ],
       ],
-      'revision_default' => [
-        [
-          'value' => TRUE,
-        ],
-      ],
     ];
   }
 
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Node/NodeResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/Node/NodeResourceTestBase.php
index fc827ace160d19e1352793f24f8aeed449e398c9..bf0ba7a59194545261c91b3dc329003af597a37c 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/Node/NodeResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Node/NodeResourceTestBase.php
@@ -152,11 +152,6 @@ protected function getExpectedNormalizedEntity() {
           'value' => TRUE,
         ],
       ],
-      'revision_default' => [
-        [
-          'value' => TRUE,
-        ],
-      ],
       'default_langcode' => [
         [
           'value' => TRUE,
diff --git a/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php b/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
index 65c82eb208b52a8db921ff11b2f2c0c6fd2001ec..72da3cb4ebb7f030f857e54500c07f17f4152562 100644
--- a/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
+++ b/core/modules/serialization/tests/src/Kernel/EntitySerializationTest.php
@@ -150,9 +150,6 @@ public function testNormalize() {
       'default_langcode' => [
         ['value' => TRUE],
       ],
-      'revision_default' => [
-        ['value' => TRUE],
-      ],
       'revision_translation_affected' => [
         ['value' => TRUE],
       ],
@@ -229,7 +226,6 @@ public function testSerialize() {
       'user_id' => '<user_id><target_id>' . $this->user->id() . '</target_id><target_type>' . $this->user->getEntityTypeId() . '</target_type><target_uuid>' . $this->user->uuid() . '</target_uuid><url>' . $this->user->url() . '</url></user_id>',
       'revision_id' => '<revision_id><value>' . $this->entity->getRevisionId() . '</value></revision_id>',
       'default_langcode' => '<default_langcode><value>1</value></default_langcode>',
-      'revision_default' => '<revision_default><value>1</value></revision_default>',
       'revision_translation_affected' => '<revision_translation_affected><value>1</value></revision_translation_affected>',
       'non_mul_field' => '<non_mul_field/>',
       'non_rev_field' => '<non_rev_field/>',