diff --git a/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php b/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
index 9c97caa..f838540 100644
--- a/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
+++ b/core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php
@@ -226,6 +226,8 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
     // settings cannot be saved otherwise.
     if (!$this->isDefaultValueWidget($form_state) && $this->getFieldSetting('title') == DRUPAL_REQUIRED) {
       $element['#element_validate'][] = array(get_called_class(), 'validateTitleElement');
+      // Mark field as required, if parent is required.
+      $element['title']['#required'] = $element['#required'];
     }
 
     // Exposing the attributes array in the widget is left for alternate and more
diff --git a/core/modules/link/src/Tests/LinkFieldTest.php b/core/modules/link/src/Tests/LinkFieldTest.php
index eada494..c1efeb6 100644
--- a/core/modules/link/src/Tests/LinkFieldTest.php
+++ b/core/modules/link/src/Tests/LinkFieldTest.php
@@ -12,6 +12,9 @@
 use Drupal\Core\Url;
 use Drupal\link\LinkItemInterface;
 use Drupal\simpletest\WebTestBase;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
 
 /**
  * Tests link field widgets and formatters.
@@ -57,27 +60,27 @@ protected function setUp() {
   function testURLValidation() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
-    $this->fieldStorage = entity_create('field_storage_config', array(
+    $this->fieldStorage = FieldStorageConfig::create([
       'field_name' => $field_name,
       'entity_type' => 'entity_test',
       'type' => 'link',
-    ));
+    ]);
     $this->fieldStorage->save();
-    $this->field = entity_create('field_config', array(
+    $this->field = FieldConfig::create([
       'field_storage' => $this->fieldStorage,
       'bundle' => 'entity_test',
-      'settings' => array(
+      'settings' => [
         'title' => DRUPAL_DISABLED,
         'link_type' => LinkItemInterface::LINK_GENERIC,
-      ),
-    ));
+      ],
+    ]);
     $this->field->save();
-    entity_get_form_display('entity_test', 'entity_test', 'default')
+    EntityFormDisplay::load('entity_test.entity_test.default')
       ->setComponent($field_name, array(
         'type' => 'link_default',
-        'settings' => array(
+        'settings' => [
           'placeholder_url' => 'http://example.com',
-        ),
+        ],
       ))
       ->save();
     entity_get_display('entity_test', 'entity_test', 'full')
@@ -218,29 +221,29 @@ protected function assertInvalidEntries($field_name, array $invalid_entries) {
   function testLinkTitle() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
-    $this->fieldStorage = entity_create('field_storage_config', array(
+    $this->fieldStorage = FieldStorageConfig::create([
       'field_name' => $field_name,
       'entity_type' => 'entity_test',
       'type' => 'link',
-    ));
+    ]);
     $this->fieldStorage->save();
-    $this->field = entity_create('field_config', array(
+    $this->field = FieldConfig::create([
       'field_storage' => $this->fieldStorage,
       'bundle' => 'entity_test',
       'label' => 'Read more about this entity',
-      'settings' => array(
+      'settings' => [
         'title' => DRUPAL_OPTIONAL,
         'link_type' => LinkItemInterface::LINK_GENERIC,
-      ),
-    ));
+      ],
+    ]);
     $this->field->save();
-    entity_get_form_display('entity_test', 'entity_test', 'default')
+    EntityFormDisplay::load('entity_test.entity_test.default')
       ->setComponent($field_name, array(
         'type' => 'link_default',
-        'settings' => array(
+        'settings' => [
           'placeholder_url' => 'http://example.com',
           'placeholder_title' => 'Enter the text for this link',
-        ),
+        ],
       ))
       ->save();
     entity_get_display('entity_test', 'entity_test', 'full')
@@ -332,23 +335,23 @@ function testLinkTitle() {
   function testLinkFormatter() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
-    $this->fieldStorage = entity_create('field_storage_config', array(
+    $this->fieldStorage = FieldStorageConfig::create([
       'field_name' => $field_name,
       'entity_type' => 'entity_test',
       'type' => 'link',
       'cardinality' => 2,
-    ));
+    ]);
     $this->fieldStorage->save();
-    entity_create('field_config', array(
+    FieldConfig::create([
       'field_storage' => $this->fieldStorage,
       'label' => 'Read more about this entity',
       'bundle' => 'entity_test',
-      'settings' => array(
+      'settings' => [
         'title' => DRUPAL_OPTIONAL,
         'link_type' => LinkItemInterface::LINK_GENERIC,
-      ),
-    ))->save();
-    entity_get_form_display('entity_test', 'entity_test', 'default')
+      ],
+    ])->save();
+    EntityFormDisplay::load('entity_test.entity_test.default')
       ->setComponent($field_name, array(
         'type' => 'link_default',
       ))
@@ -472,26 +475,26 @@ function testLinkFormatter() {
   function testLinkSeparateFormatter() {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field with settings to validate.
-    $this->fieldStorage = entity_create('field_storage_config', array(
+    $this->fieldStorage = FieldStorageConfig::create([
       'field_name' => $field_name,
       'entity_type' => 'entity_test',
       'type' => 'link',
       'cardinality' => 2,
-    ));
+    ]);
     $this->fieldStorage->save();
-    entity_create('field_config', array(
+    FieldConfig::create([
       'field_storage' => $this->fieldStorage,
       'bundle' => 'entity_test',
-      'settings' => array(
+      'settings' => [
         'title' => DRUPAL_OPTIONAL,
         'link_type' => LinkItemInterface::LINK_GENERIC,
-      ),
-    ))->save();
+      ],
+    ])->save();
     $display_options = array(
       'type' => 'link_separate',
       'label' => 'hidden',
     );
-    entity_get_form_display('entity_test', 'entity_test', 'default')
+    EntityFormDisplay::load('entity_test.entity_test.default')
       ->setComponent($field_name, array(
         'type' => 'link_default',
       ))
@@ -593,4 +596,46 @@ protected function renderTestEntity($id, $view_mode = 'full', $reset = TRUE) {
     $this->verbose($output);
   }
 
+  /**
+   * Check link text is required.
+   */
+  function testRequiredLinkText() {
+    $field_name = Unicode::strtolower($this->randomMachineName());
+    // Create a field with settings to validate.
+    $this->fieldStorage = FieldStorageConfig::create([
+      'field_name' => $field_name,
+      'entity_type' => 'entity_test',
+      'type' => 'link',
+    ]);
+    $this->fieldStorage->save();
+    $this->field = FieldConfig::create([
+      'field_storage' => $this->fieldStorage,
+      'bundle' => 'entity_test',
+      'label' => 'Read more about this entity',
+      'required' => TRUE,
+      'settings' => [
+        'title' => DRUPAL_REQUIRED,
+        'link_type' => LinkItemInterface::LINK_GENERIC,
+      ],
+    ]);
+    $this->field->save();
+    EntityFormDisplay::load('entity_test.entity_test.default')
+      ->setComponent($field_name, array(
+        'type' => 'link_default',
+        'settings' => [
+          'placeholder_url' => 'http://example.com',
+          'placeholder_title' => 'Enter the text for this link',
+        ],
+      ))
+      ->save();
+
+    // Display creation form.
+    $this->drupalGet('entity_test/add');
+    $this->drupalPostForm(NULL, [], t('Save'));
+
+    $result = $this->xpath('//label[contains(@class, :class) and contains(text(), :text)]', array(':class' => 'form-required', ':text' => 'Link text'));
+    $this->assertEqual(count($result), 1, "Link text is marked as required when the link field is set to required.");
+    $this->assertText(t('@url field is required.', array('@url' => t('URL'))));
+    $this->assertText(t('@name field is required.', array('@name' => t('Link text'))));
+  }
 }