diff --git a/core/modules/menu_ui/src/Tests/MenuCacheTagsTest.php b/core/modules/menu_ui/src/Tests/MenuCacheTagsTest.php
index 0614cd4..f9d2782 100644
--- a/core/modules/menu_ui/src/Tests/MenuCacheTagsTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuCacheTagsTest.php
@@ -17,6 +17,11 @@
 class MenuCacheTagsTest extends PageCacheTagsTestBase {
 
   /**
+   * @inheritdoc
+   */
+  protected $strictConfigSchema = TRUE;
+
+  /**
    * {@inheritdoc}
    */
   public static $modules = array('menu_ui', 'block', 'test_page_test');
diff --git a/core/modules/menu_ui/src/Tests/MenuLanguageTest.php b/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
index f74fb09..defaf02 100644
--- a/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuLanguageTest.php
@@ -20,6 +20,11 @@
 class MenuLanguageTest extends MenuWebTestBase {
 
   /**
+   * @inheritdoc
+   */
+  protected $strictConfigSchema = TRUE;
+
+  /**
    * Modules to enable.
    *
    * @var array
diff --git a/core/modules/menu_ui/src/Tests/MenuNodeTest.php b/core/modules/menu_ui/src/Tests/MenuNodeTest.php
index 99798d6..6c8c7a5 100644
--- a/core/modules/menu_ui/src/Tests/MenuNodeTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuNodeTest.php
@@ -18,6 +18,11 @@
 class MenuNodeTest extends WebTestBase {
 
   /**
+   * @inheritdoc
+   */
+  protected $strictConfigSchema = TRUE;
+
+  /**
    * Modules to enable.
    *
    * @var array
diff --git a/core/modules/menu_ui/src/Tests/MenuUninstallTest.php b/core/modules/menu_ui/src/Tests/MenuUninstallTest.php
index abacfd6..b633c7e 100644
--- a/core/modules/menu_ui/src/Tests/MenuUninstallTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuUninstallTest.php
@@ -18,6 +18,11 @@
 class MenuUninstallTest extends WebTestBase {
 
   /**
+   * @inheritdoc
+   */
+  protected $strictConfigSchema = TRUE;
+
+  /**
    * Modules to enable.
    *
    * @var array
diff --git a/core/modules/menu_ui/src/Tests/MenuWebTestBase.php b/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
index 38fb799..c657562 100644
--- a/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
+++ b/core/modules/menu_ui/src/Tests/MenuWebTestBase.php
@@ -15,6 +15,11 @@
 abstract class MenuWebTestBase extends WebTestBase {
 
   /**
+   * @inheritdoc
+   */
+  protected $strictConfigSchema = TRUE;
+
+  /**
    * Modules to enable.
    *
    * @var array