diff --git a/packages/nuxt/src/runtime/plugins/thunderid.ts b/packages/nuxt/src/runtime/plugins/thunderid.ts
index 100c788e..b45de129 100644
--- a/packages/nuxt/src/runtime/plugins/thunderid.ts
+++ b/packages/nuxt/src/runtime/plugins/thunderid.ts
@@ -1,8 +1,7 @@
 // Copyright 2025 The ThunderID Authors
 // SPDX-License-Identifier: Apache-2.0
 
-import {getRedirectBasedSignUpUrl} from '@thunderid/browser';
-import {VendorConstants} from '@thunderid/node';
+import {getRedirectBasedSignUpUrl, getVendorPrefix} from '@thunderid/browser';
 import type {AttributeSchema, UserProfile} from '@thunderid/node';
 import {ThunderIDPlugin, THUNDERID_KEY} from '@thunderid/vue';
 import type {H3Event} from 'h3';
@@ -58,7 +57,7 @@ export default defineNuxtPlugin((nuxtApp: NuxtApp) => {
     vendor?: string;
   };
 
-  const vendor: string = publicConfig.vendor ?? VendorConstants.VENDOR_PREFIX;
+  const vendor: string = getVendorPrefix(publicConfig.vendor);
 
   // Surface misconfiguration in the browser dev console only. The server
   // counterpart is handled by the thunderid-ssr Nitro plugin; doing both
diff --git a/packages/nuxt/src/runtime/utils/stateKeys.ts b/packages/nuxt/src/runtime/utils/stateKeys.ts
index 3a0b92c9..9c2b82e0 100644
--- a/packages/nuxt/src/runtime/utils/stateKeys.ts
+++ b/packages/nuxt/src/runtime/utils/stateKeys.ts
@@ -1,7 +1,7 @@
 // Copyright 2025 The ThunderID Authors
 // SPDX-License-Identifier: Apache-2.0
 
-import {getVendorPrefix} from '@thunderid/node';
+import {getVendorPrefix} from '@thunderid/browser';
 
 /**
  * Shared `useState` key for the ThunderID auth state (`ThunderIDAuthState`).
diff --git a/packages/nuxt/tests/unit/thunderid-root.test.ts b/packages/nuxt/tests/unit/thunderid-root.test.ts
index 80e2cca9..9fb0eab3 100644
--- a/packages/nuxt/tests/unit/thunderid-root.test.ts
+++ b/packages/nuxt/tests/unit/thunderid-root.test.ts
@@ -26,6 +26,7 @@ vi.mock('@thunderid/vue', () => ({
 
 vi.mock('@thunderid/browser', () => ({
   generateFlattenedUserProfile: vi.fn((_user: any, _schemas: any) => ({email: 'updated@example.com'})),
+  getVendorPrefix: vi.fn((vendor?: string) => vendor ?? 'thunderid'),
 }));
 
 // Stub Nuxt composables so the component's setup() can run in pure Node.