diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 399c880f2ea..cb936f17478 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -37203,7 +37203,16 @@
   "local_changes": {
     "deleted": [],
     "deleted_reftests": {},
-    "items": {},
+    "items": {
+      "testharness": {
+        "html/semantics/scripting-1/the-script-element/script-charset-03.html": [
+          {
+            "path": "html/semantics/scripting-1/the-script-element/script-charset-03.html",
+            "url": "/html/semantics/scripting-1/the-script-element/script-charset-03.html"
+          }
+        ]
+      }
+    },
     "reftest_nodes": {}
   },
   "reftest_nodes": {
diff --git a/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/script-charset-03.html b/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/script-charset-03.html
new file mode 100644
index 00000000000..4ff4cc6b0ba
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/script-charset-03.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<head>
+<meta charset="utf-8">
+<title>Script changing @charset</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#scriptingLanguages">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var s = document.createElement("script");
+  s.src = "external-script-windows1250.js";
+  s.charset = "windows-1250";
+  document.body.appendChild(s);
+  s.charset = "utf-8";
+  window.onload = this.step_func_done(function() {
+    assert_equals(window.getSomeString(), "\u015b\u0107\u0105\u017c\u017a");
+  });
+})
+</script>
