diff --git a/sanityv3/schemas/documents/404.ts b/sanityv3/schemas/documents/404.ts
index 2b5d66e80..0128b9785 100644
--- a/sanityv3/schemas/documents/404.ts
+++ b/sanityv3/schemas/documents/404.ts
@@ -36,6 +36,7 @@ export default {
     },
   ],
   fields: [
+    lang,
     {
       title: 'Meta information',
       name: 'seo',
diff --git a/sanityv3/schemas/documents/500.ts b/sanityv3/schemas/documents/500.ts
index 8292c8e16..8d952b841 100644
--- a/sanityv3/schemas/documents/500.ts
+++ b/sanityv3/schemas/documents/500.ts
@@ -5,6 +5,7 @@ import { EdsIcon } from '../../icons'
 import CompactBlockEditor from '../components/CompactBlockEditor'
 import { configureTitleBlockContent } from '../editors'
 import { configureBlockContent } from '../editors/blockContentType'
+import { lang } from './langField'
 
 const titleContentType = configureTitleBlockContent()
 const textContentType = configureBlockContent({
@@ -35,6 +36,7 @@ export default {
     },
   ],
   fields: [
+    lang,
     {
       title: 'Meta information',
       name: 'seo',
diff --git a/sanityv3/schemas/documents/simpleMenu.tsx b/sanityv3/schemas/documents/simpleMenu.tsx
index 16f4c2908..5c44c17c3 100644
--- a/sanityv3/schemas/documents/simpleMenu.tsx
+++ b/sanityv3/schemas/documents/simpleMenu.tsx
@@ -1,4 +1,5 @@
 import { MenuIcon } from '../../icons'
+import { lang } from './langField'
 
 export default {
   type: 'document',
@@ -6,6 +7,7 @@ export default {
   name: 'simpleMenu',
   __experimental_actions: ['create', 'update', 'publish' /*,"delete"*/],
   fields: [
+    lang,
     {
       title: 'Menu groups',
       name: 'group',