diff --git a/packages/nuxt/src/app/composables/id.ts b/packages/nuxt/src/app/composables/id.ts
index 42db3eb2a1..5b0c666cb9 100644
--- a/packages/nuxt/src/app/composables/id.ts
+++ b/packages/nuxt/src/app/composables/id.ts
@@ -7,6 +7,7 @@ const ATTR_KEY = 'data-n-ids'
 /**
  * Generate an SSR-friendly unique identifier that can be passed to accessibility attributes.
  */
+export function useId (): string
 export function useId (key?: string): string {
   if (typeof key !== 'string') {
     throw new TypeError('[nuxt] [useId] key must be a string.')
diff --git a/test/fixtures/basic-types/types.ts b/test/fixtures/basic-types/types.ts
index a2617138ec..429a5d27d6 100644
--- a/test/fixtures/basic-types/types.ts
+++ b/test/fixtures/basic-types/types.ts
@@ -362,6 +362,11 @@ describe('composables', () => {
     expectTypeOf(useFetch('/test', { default: () => 500 }).data).toEqualTypeOf<Ref<unknown>>()
   })
 
+  it('prevents passing string to `useId`', () => {
+    // @ts-expect-error providing a key is not allowed
+    useId('test')
+  })
+
   it('enforces readonly cookies', () => {
     // @ts-expect-error readonly cookie
     useCookie('test', { readonly: true }).value = 'thing'