deleted file mode 100644
--- a/testing/web-platform/meta/workers/Worker-multi-port.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[Worker-multi-port.html]
-  [Test postMessage without sequence throws exception]
-    expected: FAIL
-
-  [Test postMessage on channel with previous failed postMessage calls.]
-    expected: FAIL
-
-  [Test postMessage with incorrect ports throws exception]
-    expected: FAIL
-

--- a/testing/web-platform/tests/workers/Worker-multi-port.html
+++ b/testing/web-platform/tests/workers/Worker-multi-port.html
@@ -51,34 +51,34 @@ test(() => {
                                                 [channel.port1, null,
                                                  channel.port2]); },
                 'postMessage with null ports should throw exception.');
 }, 'Test postMessage with null ports throws exception.');
 
 test(() => {
   var worker = new Worker("support/Worker-thread-multi-port.js")
   var channel = new MessageChannel();
-  assert_throws(new TypeError(),
+  assert_throws('DataCloneError',
                 function() { worker.postMessage("notAPort",
                                                 [channel.port1, {},
                                                  channel.port2]); },
                 'postMessage with incorrect ports should throw exception.');
 }, 'Test postMessage with incorrect ports throws exception');
 
 test(() => {
   var worker = new Worker("support/Worker-thread-multi-port.js");
-  assert_throws(new TypeError(),
+  assert_throws('DataCloneError',
                 function() { worker.postMessage("notASequence", [{length: 3}]) },
                 'postMessage without sequence should throw exception.');
 }, 'Test postMessage without sequence throws exception');
 
 async_test(function(t) {
   var worker = new Worker("support/Worker-thread-multi-port.js");
   var channel = new MessageChannel();
-  assert_throws(new TypeError(),
+  assert_throws('DataCloneError',
                 function() { worker.postMessage("notAPort",
                                                 [channel.port1, {},
                                                  channel.port2]); },
                 'postMessage with incorrect ports should throw exception.');
   worker.onmessage = t.step_func_done(function(evt) {
     assert_true(evt.data.startsWith('PASS'));
   });
   worker.postMessage("failed ports", [channel.port1, channel.port2]);