diff --git a/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php b/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php
index cf3badd8dd9..40902f13910 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/DisplayOverview.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\DisplayOverview.
+ * Contains \Drupal\field_ui\DisplayOverview.
  */
 
 namespace Drupal\field_ui;
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php b/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
index 983917fcb28..cc5ab8bf1d2 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/FieldOverview.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\FieldOverview.
+ * Contains \Drupal\field_ui\FieldOverview.
  */
 
 namespace Drupal\field_ui;
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/OverviewBase.php b/core/modules/field_ui/lib/Drupal/field_ui/OverviewBase.php
index d2cb1f8cedf..6fe8992fd7f 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/OverviewBase.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/OverviewBase.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\OverviewBase.
+ * Contains \Drupal\field_ui\OverviewBase.
  */
 
 namespace Drupal\field_ui;
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Tests/FieldUiTestBase.php b/core/modules/field_ui/lib/Drupal/field_ui/Tests/FieldUiTestBase.php
index 5295ad80c9d..bc44cbd599c 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Tests/FieldUiTestBase.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Tests/FieldUiTestBase.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\Tests\FieldUiTestBase.
+ * Contains \Drupal\field_ui\Tests\FieldUiTestBase.
  */
 
 namespace Drupal\field_ui\Tests;
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageDisplayTest.php b/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageDisplayTest.php
index 51dc8b1445d..55028d1388b 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageDisplayTest.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageDisplayTest.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\Tests\ManageDisplayTest.
+ * Contains \Drupal\field_ui\Tests\ManageDisplayTest.
  */
 
 namespace Drupal\field_ui\Tests;
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageFieldsTest.php b/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageFieldsTest.php
index 6425a371cca..c0f5471ce46 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageFieldsTest.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Tests/ManageFieldsTest.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\field_ui\Tests\ManageFieldsTest.
+ * Contains \Drupal\field_ui\Tests\ManageFieldsTest.
  */
 
 namespace Drupal\field_ui\Tests;