diff --git a/tests/play-public-version-match.test.ts b/tests/play-public-version-match.test.ts
index 2942134..7321826 100644
--- a/tests/play-public-version-match.test.ts
+++ b/tests/play-public-version-match.test.ts
@@ -94,14 +94,15 @@ describe('public store page read', () => {
     expect(await playPublicPage('com.example.first200', { noCache: true })).toMatchObject({ state: 'public', http: 200, versionName: '1.0.0' });
   });
   test('offline or a server error = unknown; unknown is never cached', async () => {
+    const off = `com.example.offline${Date.now()}`;
     globalThis.fetch = (async () => { throw new Error('getaddrinfo ENOTFOUND play.google.com'); }) as unknown as typeof fetch;
-    const r = await playPublicPage('com.example.offline', { noCache: true });
+    const r = await playPublicPage(off, { noCache: true });
     expect(r).toMatchObject({ state: 'unknown', http: null });
     expect(r.error).toContain('ENOTFOUND');
     answer(503);
-    expect((await playPublicPage('com.example.offline')).state).toBe('unknown');
+    expect((await playPublicPage(off)).state).toBe('unknown');
     answer(404);
-    expect((await playPublicPage('com.example.offline')).state).toBe('notPublic');
+    expect((await playPublicPage(off)).state).toBe('notPublic');
   });
   test('answers are cached for a few minutes', async () => {
     const urls = answer(404);