diff --git a/tests/library/browsercontext-viewport.spec.ts b/tests/library/browsercontext-viewport.spec.ts
index 6b222bc000..e854e3c011 100644
--- a/tests/library/browsercontext-viewport.spec.ts
+++ b/tests/library/browsercontext-viewport.spec.ts
@@ -30,6 +30,7 @@ it('should set the proper viewport size', async ({ page, server }) => {
 });
 
 it('should return correct outerWidth and outerHeight', async ({ page }) => {
+  await page.setViewportSize({ width: 410, height: 420 });
   const size = await page.evaluate(() => {
     return {
       innerWidth: window.innerWidth,
@@ -38,8 +39,8 @@ it('should return correct outerWidth and outerHeight', async ({ page }) => {
       outerHeight: window.outerHeight,
     };
   });
-  expect(size.innerWidth).toBe(1280);
-  expect(size.innerHeight).toBe(720);
+  expect(size.innerWidth).toBe(410);
+  expect(size.innerHeight).toBe(420);
   expect(size.outerWidth >= size.innerWidth).toBeTruthy();
   expect(size.outerHeight >= size.innerHeight).toBeTruthy();
 });