diff --git a/testing/web-platform/tests/encoding/bom-handling.html b/testing/web-platform/tests/encoding/bom-handling.html
new file mode 100644
index 0000000000000..ea70d362546ed
--- /dev/null
+++ b/testing/web-platform/tests/encoding/bom-handling.html
@@ -0,0 +1,17 @@
+﻿<!-- starts with a UTF-8 BOM -->
+<!doctype html>
+<meta charset="windows-1252">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<title>BOM handling</title>
+<div id=log></div>
+<script>
+
+test(
+  () => {
+    assert_equals(document.characterSet.toLowerCase(), "utf-8");
+  },
+  "document.characterSet should match the BOM"
+);
+
+</script>
diff --git a/testing/web-platform/tests/encoding/bom-handling.html.headers b/testing/web-platform/tests/encoding/bom-handling.html.headers
new file mode 100644
index 0000000000000..2340a89c93ce4
--- /dev/null
+++ b/testing/web-platform/tests/encoding/bom-handling.html.headers
@@ -0,0 +1 @@
+Content-Type: text/html; charset=windows-1252
