diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
index 1c8d13e..6988506 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/AddItem.php
@@ -60,9 +60,7 @@ public function buildForm(array $form, array &$form_state) {
     );
 
     $executable = $view->get('executable');
-    if (!$executable->setDisplay($display_id)) {
-      views_ajax_error(t('Invalid display id @display', array('@display' => $display_id)));
-    }
+    $executable->setDisplay($display_id);
     $display = &$executable->displayHandlers->get($display_id);
 
     $types = ViewExecutable::viewsHandlerTypes();
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
index e35cee0..7a221d9 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItem.php
@@ -65,9 +65,7 @@ public function buildForm(array $form, array &$form_state) {
     );
     $executable = $view->get('executable');
     $save_ui_cache = FALSE;
-    if (!$executable->setDisplay($display_id)) {
-      views_ajax_error(t('Invalid display id @display', array('@display' => $display_id)));
-    }
+    $executable->setDisplay($display_id);
     $item = $executable->getItem($display_id, $type, $id);
 
     if ($item) {
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
index 14895f8..4b8a3bd 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/ConfigItemExtra.php
@@ -63,9 +63,7 @@ public function buildForm(array $form, array &$form_state) {
       ),
     );
     $executable = $view->get('executable');
-    if (!$executable->setDisplay($display_id)) {
-      views_ajax_error(t('invalid display id @display', array('@display' => $display_id)));
-    }
+    $executable->setDisplay($display_id);
     $item = $executable->getItem($display_id, $type, $id);
 
     if ($item) {
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
index d8c1e9a..d1151ea 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Display.php
@@ -64,9 +64,7 @@ public function buildForm(array $form, array &$form_state) {
     $section = $form_state['section'];
 
     $executable = $view->get('executable');
-    if (!$executable->setDisplay($display_id)) {
-      views_ajax_error(t('Invalid display id @display', array('@display' => $display_id)));
-    }
+    $executable->setDisplay($display_id);
     $display = &$executable->display[$display_id];
 
     // Get form from the handler.
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
index 75c469f..452e157 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Form/Ajax/Rearrange.php
@@ -54,9 +54,7 @@ public function buildForm(array $form, array &$form_state) {
 
     $types = ViewExecutable::viewsHandlerTypes();
     $executable = $view->get('executable');
-    if (!$executable->setDisplay($display_id)) {
-      views_ajax_error(t('Invalid display id @display', array('@display' => $display_id)));
-    }
+    $executable->setDisplay($display_id);
     $display = &$executable->displayHandlers->get($display_id);
     $form['#title'] = t('Rearrange @type', array('@type' => $types[$type]['ltitle']));
     $form['#section'] = $display_id . 'rearrange-item';