diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 8cdeec9920b..e228320281b 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -14500,7 +14500,7 @@
      ]
     ],
     "window-postmessage-sameorigin.html": [
-     "6a1d00fd1c37fcf1492ecb48a02fe358ac2cbacf",
+     "cb3bc26e8821b73bcee0455c765362ab731bf3fa",
      [
       null,
       {}
diff --git a/tests/wpt/mozilla/meta/mozilla/window-postmessage-sameorigin.html.ini b/tests/wpt/mozilla/meta/mozilla/window-postmessage-sameorigin.html.ini
deleted file mode 100644
index 0ad20064803..00000000000
--- a/tests/wpt/mozilla/meta/mozilla/window-postmessage-sameorigin.html.ini
+++ /dev/null
@@ -1,7 +0,0 @@
-[window-postmessage-sameorigin.html]
-  [explicit invalid url, cloneable string message (handler)]
-    expected: FAIL
-
-  [explicit invalid url, cloneable string message (listener)]
-    expected: FAIL
-
diff --git a/tests/wpt/mozilla/tests/mozilla/window-postmessage-sameorigin.html b/tests/wpt/mozilla/tests/mozilla/window-postmessage-sameorigin.html
index 6a1d00fd1c3..cb3bc26e882 100644
--- a/tests/wpt/mozilla/tests/mozilla/window-postmessage-sameorigin.html
+++ b/tests/wpt/mozilla/tests/mozilla/window-postmessage-sameorigin.html
@@ -56,7 +56,7 @@ var base_tests = [
   function() { return expect_message('basic', '/', 'same origin, cloneable string message') },
   function() { return expect_message('basic', HTTP_ORIGIN, 'explicit same origin, cloneable string message') },
   function() { return expect_no_message('basic', HTTPS_ORIGIN, 'explicit cross origin, cloneable string message') },
-  function() { return expect_error_js(SyntaxError, 'basic', 'not-a-url', 'explicit invalid url, cloneable string message') },
+  function() { return expect_error_dom('SyntaxError', 'basic', 'not-a-url', 'explicit invalid url, cloneable string message') },
   function() { return expect_error_dom('DATA_CLONE_ERR', window, '*', 'any origin, non-cloneable message') },
 ];