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 d119451..b7b8c9e 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
@@ -44,10 +44,10 @@ display:
           field: job
           plugin_id: string
       arguments:
-        null:
-          id: null
+        'null':
+          id: 'null'
           table: views
-          field: null
+          field: 'null'
           plugin_id: 'null'
       style:
         type: default