diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
index f37f950..3132fd0 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
@@ -482,7 +482,7 @@ protected function defineOptions() {
           'exposed_form' => TRUE,
 
           'link_display' => TRUE,
-          'link_url' => '',
+          'link_url' => TRUE,
           'group_by' => TRUE,
 
           'style' => TRUE,
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Tests/DisplayTest.php b/core/modules/views_ui/lib/Drupal/views_ui/Tests/DisplayTest.php
index 905095a..0d8ae66 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Tests/DisplayTest.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/DisplayTest.php
@@ -272,11 +272,16 @@ public function testLinkDisplay() {
     $this->assertEqual($result[0], 'Page', 'Make sure that the link option summary shows the right linked display.');
 
     $link_display_path = 'admin/structure/views/nojs/display/test_display/block_1/link_display';
-    $this->drupalPostForm($link_display_path, array('link_display' => 'custom_url'), t('Apply'));
+    $this->drupalPostForm($link_display_path, array('link_display' => 'custom_url', 'link_url' => 'a-custom-url'), t('Apply'));
     // The form redirects to the master display.
     $this->drupalGet($path);
 
     $this->assertLink(t('Custom URL'), 0, 'The link option has custom url as summary.');
+
+    // Test the default link_url value for new display
+    $this->drupalPostForm(NULL, array(), t('Add Block'));
+    $this->clickLink(t('Custom URL'));
+    $this->assertFieldByName('link_url', 'a-custom-url');
   }
 
   /**