diff --git a/core/modules/system/src/Tests/Update/MenuTreeSerializationTitleTest.php b/core/modules/system/src/Tests/Update/MenuTreeSerializationTitleTest.php
index eca4102..2439b1c 100644
--- a/core/modules/system/src/Tests/Update/MenuTreeSerializationTitleTest.php
+++ b/core/modules/system/src/Tests/Update/MenuTreeSerializationTitleTest.php
@@ -35,28 +35,31 @@ public function testUpdate() {
     // Ensure that some fields got dropped.
     $database = \Drupal::database();
     $schema = $database->schema();
-    if ($schema->tableExists('menu_tree')) {
-      $this->assertFalse($schema->fieldExists('menu_tree', 'title_arguments'));
-      $this->assertFalse($schema->fieldExists('menu_tree', 'title_contexts'));
 
-      // Ensure that all titles and description values can be unserialized.
-      $select = $database->select('menu_tree');
-      $result = $select->fields('menu_tree', ['id', 'title', 'description'])
-        ->execute()
-        ->fetchAllAssoc('id');
+    if (!$schema->tableExists('menu_tree')) {
+      return;
+    }
+
+    $this->assertFalse($schema->fieldExists('menu_tree', 'title_arguments'));
+    $this->assertFalse($schema->fieldExists('menu_tree', 'title_contexts'));
+
+    // Ensure that all titles and description values can be unserialized.
+    $select = $database->select('menu_tree');
+    $result = $select->fields('menu_tree', ['id', 'title', 'description'])
+      ->execute()
+      ->fetchAllAssoc('id');
 
-      // The test coverage relies upon the fact that unserialize() would emit a
-      // warning if the value is not a valid serialized value.
-      foreach ($result as $link) {
-        $title = unserialize($link->title);
-        $description = unserialize($link->description);
-        // Verify that all the links from system module have a been updated with
-        // a TranslationWrapper as title and description due to the rebuild.
-        if (strpos($link->id, 'system.') === 0) {
-          $this->assertTrue($title instanceof TranslationWrapper, get_class($title));
-          if ($description) {
-            $this->assertTrue($description instanceof TranslationWrapper, get_class($description));
-          }
+    // The test coverage relies upon the fact that unserialize() would emit a
+    // warning if the value is not a valid serialized value.
+    foreach ($result as $link) {
+      $title = unserialize($link->title);
+      $description = unserialize($link->description);
+      // Verify that all the links from system module have a been updated with
+      // a TranslationWrapper as title and description due to the rebuild.
+      if (strpos($link->id, 'system.') === 0) {
+        $this->assertTrue($title instanceof TranslationWrapper, get_class($title));
+        if ($description) {
+          $this->assertTrue($description instanceof TranslationWrapper, get_class($description));
         }
       }
     }