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diff --git a/js/src/tests/test262/language/statements/class/elements/private-static-method-not-writable.js b/js/src/tests/test262/language/statements/class/elements/private-static-method-not-writable.js
new file mode 100644
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+++ b/js/src/tests/test262/language/statements/class/elements/private-static-method-not-writable.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2021 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+  Throws TypeError when attempting to overwrite a private static method.
+esid: sec-privateset
+info: |
+  7.3.30 PrivateSet ( P, O, value )
+  1. Let entry be ! PrivateElementFind(P, O).
+  2. If entry is empty, throw a TypeError exception.
+  3. If entry.[[Kind]] is field, then
+    ...
+  4. Else if entry.[[Kind]] is method, then
+    a. Throw a TypeError exception.
+  5. ...
+
+features: [class, class-static-methods-private]
+---*/
+
+class C {
+  static #m() {}
+
+  static assign() {
+    this.#m = 0;
+  }
+}
+
+assert.throws(TypeError, function() {
+  C.assign();
+});
+
+reportCompare(0, 0);