diff --git a/tests/playwright-test/playwright.mockingproxy.spec.ts b/tests/playwright-test/playwright.mockingproxy.spec.ts
index 37f96984f4..9389218281 100644
--- a/tests/playwright-test/playwright.mockingproxy.spec.ts
+++ b/tests/playwright-test/playwright.mockingproxy.spec.ts
@@ -110,7 +110,7 @@ test('all properties are populated', async ({ runInlineTest, server, request })
     
         expect(await response.finished()).toBe(null);
         expect(request.serviceWorker()).toBe(null);
-        expect(request.frame()).not.toBe(null);
+        expect(request.frame()).toBe(null); // we know the page, but not the frame
     
         expect(request.failure()).toBe(null);
         expect(request.isNavigationRequest()).toBe(false);