diff --git a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_argument_tokens.yml b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_argument_tokens.yml
index 7c9f5f3..d119451 100644
--- a/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_argument_tokens.yml
+++ b/core/modules/views/tests/modules/views_test_config/test_views/views.view.test_field_argument_tokens.yml
@@ -48,7 +48,7 @@ display:
           id: null
           table: views
           field: null
-          plugin_id: null
+          plugin_id: 'null'
       style:
         type: default
       row: