diff --git a/src/Tests/PageConfigSchemaTest.php b/src/Tests/PageConfigSchemaTest.php
index 2af9051..8f4c949 100644
--- a/src/Tests/PageConfigSchemaTest.php
+++ b/src/Tests/PageConfigSchemaTest.php
@@ -24,7 +24,7 @@ class PageConfigSchemaTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = ['page_manager', 'block', 'node', 'user'];
+  public static $modules = ['system', 'ctools', 'page_manager', 'block', 'node', 'user'];
 
   /**
    * {@inheritdoc}