diff --git a/core/modules/user/tests/src/Functional/Rest/RoleResourceTestBase.php b/core/modules/user/tests/src/Functional/Rest/RoleResourceTestBase.php
index e20ea1fe7f..8b5a7b8b16 100644
--- a/core/modules/user/tests/src/Functional/Rest/RoleResourceTestBase.php
+++ b/core/modules/user/tests/src/Functional/Rest/RoleResourceTestBase.php
@@ -36,6 +36,7 @@ protected function createEntity() {
     $role = Role::create([
       'id' => 'llama',
       'name' => $this->randomString(),
+      'description' => '',
     ]);
     $role->save();