diff --git a/core/modules/contact/src/Tests/CategoryMethodsTest.php b/core/modules/contact/src/Tests/CategoryMethodsTest.php
index 98c8686..a47c535 100644
--- a/core/modules/contact/src/Tests/CategoryMethodsTest.php
+++ b/core/modules/contact/src/Tests/CategoryMethodsTest.php
@@ -21,7 +21,7 @@ class CategoryMethodsTest extends DrupalUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('contact');
+  public static $modules = array('contact', 'user');
 
   /**
    * Category object.