diff --git a/core/modules/views/src/Tests/Handler/FieldWebTest.php b/core/modules/views/src/Tests/Handler/FieldWebTest.php
index 4f1387f..92800fb 100644
--- a/core/modules/views/src/Tests/Handler/FieldWebTest.php
+++ b/core/modules/views/src/Tests/Handler/FieldWebTest.php
@@ -327,7 +327,7 @@ public function testFieldClasses() {
 
     $id_field->options['element_default_classes'] = FALSE;
     // Setup some kind of label by default.
-    $id_field->options['label'] = $this->randomName();
+    $id_field->options['label'] = $this->randomMachineName();
     $output = $view->preview();
     $output = drupal_render($output);
     $this->assertFalse($this->xpathContent($output, '//div[contains(@class, :class)]', array(':class' => 'field-content')));
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Tests/StyleTableTest.php b/core/modules/views_ui/lib/Drupal/views_ui/Tests/StyleTableTest.php
index 32208e4..f7a5161 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Tests/StyleTableTest.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/StyleTableTest.php
@@ -28,12 +28,12 @@ public static function getInfo() {
   public function testWizard() {
     // Create a new view and check that the first field has a label.
     $view = array();
-    $view['label'] = $this->randomName(16);
-    $view['id'] = strtolower($this->randomName(16));
+    $view['label'] = $this->randomMachineName(16);
+    $view['id'] = strtolower($this->randomMachineName(16));
     $view['show[wizard_key]'] = 'node';
     $view['page[create]'] = TRUE;
     $view['page[style][style_plugin]'] = 'table';
-    $view['page[title]'] = $this->randomName(16);
+    $view['page[title]'] = $this->randomMachineName(16);
     $view['page[path]'] = $view['id'];
     $this->drupalPostForm('admin/structure/views/add', $view, t('Save and edit'));
 
diff --git a/core/modules/views_ui/src/Tests/FieldUITest.php b/core/modules/views_ui/src/Tests/FieldUITest.php
index 9172e75..615b1e5 100644
--- a/core/modules/views_ui/src/Tests/FieldUITest.php
+++ b/core/modules/views_ui/src/Tests/FieldUITest.php
@@ -64,13 +64,13 @@ public function testFieldLabel() {
     // Create a view with unformatted style and make sure the fields have no
     // labels by default.
     $view = array();
-    $view['label'] = $this->randomName(16);
-    $view['id'] = strtolower($this->randomName(16));
-    $view['description'] = $this->randomName(16);
+    $view['label'] = $this->randomMachineName(16);
+    $view['id'] = strtolower($this->randomMachineName(16));
+    $view['description'] = $this->randomMachineName(16);
     $view['show[wizard_key]'] = 'node';
     $view['page[create]'] = TRUE;
     $view['page[style][style_plugin]'] = 'default';
-    $view['page[title]'] = $this->randomName(16);
+    $view['page[title]'] = $this->randomMachineName(16);
     $view['page[path]'] = $view['id'];
     $this->drupalPostForm('admin/structure/views/add', $view, t('Save and edit'));