diff --git a/core/modules/image/src/Tests/ImageFieldDisplayTest.php b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
index 979b56f..c7e9c1f 100644
--- a/core/modules/image/src/Tests/ImageFieldDisplayTest.php
+++ b/core/modules/image/src/Tests/ImageFieldDisplayTest.php
@@ -17,14 +17,6 @@
  */
 class ImageFieldDisplayTest extends ImageFieldTestBase {
 
-  /**
-   * Indicates that headers should be dumped if verbose output is enabled.
-   *
-   * Headers are dumped to verbose by drupalGet(), drupalHead(), and
-   * drupalPostForm().
-   *
-   * @var bool
-   */
   protected $dumpHeaders = TRUE;
 
   /**