1 files changed, 1 insertions, 1 deletions
diff --git a/testing/web-platform/tests/workers/constructors/SharedWorker/same-origin.html b/testing/web-platform/tests/workers/constructors/SharedWorker/same-origin.html
index 2e0dd8db3..78d53164e 100644
--- a/testing/web-platform/tests/workers/constructors/SharedWorker/same-origin.html
+++ b/testing/web-platform/tests/workers/constructors/SharedWorker/same-origin.html
@@ -16,7 +16,7 @@ function testSharedWorkerHelper(t, script) {
   try {
     var worker = new SharedWorker(script, '');
     worker.onerror = t.step_func_done(function(e) {
-      assert_true(e instanceof ErrorEvent);
+      assert_true(e instanceof Event);
     });
   } catch (e) {
     t.step_func_done(function(e) { assert_true(true); });