diff --git a/tests/src/Functional/GroupInviteExpireTest.php b/tests/src/Functional/GroupInviteExpireTest.php
index d8bd27e..95afd95 100644
--- a/tests/src/Functional/GroupInviteExpireTest.php
+++ b/tests/src/Functional/GroupInviteExpireTest.php
@@ -18,7 +18,7 @@ class GroupInviteExpireTest extends GroupBrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = [
+  protected static $modules = [
     'group',
     'group_test_config',
     'ginvite',
diff --git a/tests/src/Functional/GroupInviteTest.php b/tests/src/Functional/GroupInviteTest.php
index 930e79c..99957f5 100644
--- a/tests/src/Functional/GroupInviteTest.php
+++ b/tests/src/Functional/GroupInviteTest.php
@@ -18,7 +18,7 @@ class GroupInviteTest extends GroupBrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = [
+  protected static $modules = [
     'group',
     'group_test_config',
     'ginvite',