diff --git a/core/modules/field/src/Tests/Update/FieldUpdateTest.php b/core/modules/field/src/Tests/Update/FieldUpdateTest.php
index 88dc900..65ca720 100644
--- a/core/modules/field/src/Tests/Update/FieldUpdateTest.php
+++ b/core/modules/field/src/Tests/Update/FieldUpdateTest.php
@@ -49,22 +49,22 @@ protected function setDatabaseDumpFiles() {
    *
    * @see field_update_8001()
    */
-//  public function testFieldUpdate8001() {
-//    // Load the 'node.field_image' field storage config, and check that is has
-//    // a 'target_bundle' setting.
-//    $config = $this->configFactory->get('field.storage.node.field_image');
-//    $settings = $config->get('settings');
-//    $this->assertTrue(array_key_exists('target_bundle', $settings));
-//
-//    // Run updates.
-//    $this->runUpdates();
-//
-//    // Reload the config, and check that the 'target_bundle' setting has been
-//    // removed.
-//    $config = $this->configFactory->get('field.storage.node.field_image');
-//    $settings = $config->get('settings');
-//    $this->assertFalse(array_key_exists('target_bundle', $settings));
-//  }
+  public function testFieldUpdate8001() {
+    // Load the 'node.field_image' field storage config, and check that is has
+    // a 'target_bundle' setting.
+    $config = $this->configFactory->get('field.storage.node.field_image');
+    $settings = $config->get('settings');
+    $this->assertTrue(array_key_exists('target_bundle', $settings));
+
+    // Run updates.
+    $this->runUpdates();
+
+    // Reload the config, and check that the 'target_bundle' setting has been
+    // removed.
+    $config = $this->configFactory->get('field.storage.node.field_image');
+    $settings = $config->get('settings');
+    $this->assertFalse(array_key_exists('target_bundle', $settings));
+  }
 
   /**
    * Tests field_update_8002().