diff --git a/test/browser/specs/runner.test.mjs b/test/browser/specs/runner.test.mjs
index 480daf03a583..bfadbb3b374e 100644
--- a/test/browser/specs/runner.test.mjs
+++ b/test/browser/specs/runner.test.mjs
@@ -30,7 +30,7 @@ await test('tests are actually running', async () => {
 
 await test('correctly prints error', () => {
   assert.match(stderr, /expected 1 to be 2/, 'prints failing error')
-  assert.match(stderr, /- 1\s+\+ 2/, 'prints failing diff')
+  assert.match(stderr, /- 2\s+\+ 1/, 'prints failing diff')
 })
 
 await test('logs are redirected to stdout', async () => {