diff --git a/src/commands/prepare.ts b/src/commands/prepare.ts
index 4893027bd..e0768511b 100644
--- a/src/commands/prepare.ts
+++ b/src/commands/prepare.ts
@@ -1,7 +1,5 @@
 import { relative, resolve } from 'pathe'
 import { consola } from 'consola'
-// we are deliberately inlining this code as a backup in case user has `@nuxt/schema<3.7`
-import { writeTypes as writeTypesLegacy } from '@nuxt/kit'
 
 import { defineCommand } from 'citty'
 import { clearBuildDir } from '../utils/fs'
@@ -26,7 +24,7 @@ export default defineCommand({
 
     const cwd = resolve(ctx.args.cwd || ctx.args.rootDir)
 
-    const { loadNuxt, buildNuxt, writeTypes = writeTypesLegacy } = await loadKit(cwd)
+    const { loadNuxt, buildNuxt, writeTypes } = await loadKit(cwd)
     const nuxt = await loadNuxt({
       cwd,
       dotenv: {
diff --git a/src/commands/typecheck.ts b/src/commands/typecheck.ts
index e8cba01bf..7cfbaea46 100644
--- a/src/commands/typecheck.ts
+++ b/src/commands/typecheck.ts
@@ -5,9 +5,6 @@ import { defineCommand } from 'citty'
 import { isBun } from 'std-env'
 import { createJiti } from 'jiti'
 
-// we are deliberately inlining this code as a backup in case user has `@nuxt/schema<3.7`
-import { writeTypes as writeTypesLegacy } from '@nuxt/kit'
-
 import { loadKit } from '../utils/kit'
 
 import { cwdArgs, legacyRootDirArgs, logLevelArgs } from './_shared'
@@ -27,7 +24,7 @@ export default defineCommand({
 
     const cwd = resolve(ctx.args.cwd || ctx.args.rootDir)
 
-    const { loadNuxt, buildNuxt, writeTypes = writeTypesLegacy } = await loadKit(cwd)
+    const { loadNuxt, buildNuxt, writeTypes } = await loadKit(cwd)
     const nuxt = await loadNuxt({
       cwd,
       overrides: {
diff --git a/src/utils/kit.ts b/src/utils/kit.ts
index f87ea0bd4..eab772357 100644
--- a/src/utils/kit.ts
+++ b/src/utils/kit.ts
@@ -1,5 +1,3 @@
-// we are deliberately inlining this code as a backup in case user has `@nuxt/schema<3.7`
-import { writeTypes as writeTypesLegacy } from '@nuxt/kit'
 import { createJiti } from 'jiti'
 
 export const loadKit = async (rootDir: string): Promise<typeof import('@nuxt/kit')> => {
@@ -11,8 +9,12 @@ export const loadKit = async (rootDir: string): Promise<typeof import('@nuxt/kit
     const rootURL = localKit ? rootDir : (await tryResolveNuxt(rootDir)) || rootDir
     let kit: typeof import('@nuxt/kit') = await jiti.import('@nuxt/kit', { parentURL: rootURL })
     if (!kit.writeTypes) {
-      // Polyfills for schema < 3.7
-      kit = { ...kit, writeTypes: writeTypesLegacy }
+      kit = {
+        ...kit,
+        writeTypes: () => {
+          throw new Error('`writeTypes` is not available in this version of `@nuxt/kit`. Please upgrade to v3.7 or newer.')
+        },
+      }
     }
     return kit
   }