diff --git a/test/testRegression.js b/test/testRegression.js
new file mode 100644
index 0000000..fb99e70
--- /dev/null
+++ b/test/testRegression.js
@@ -0,0 +1,78 @@
+// Copyright (C) 2012 Software Languages Lab, Vrije Universiteit Brussel
+// This code is dual-licensed under both the Apache License and the MPL
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/* Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is a series of unit tests for the ES-harmony reflect module.
+ *
+ * The Initial Developer of the Original Code is
+ * Tom Van Cutsem, Vrije Universiteit Brussel.
+ * Portions created by the Initial Developer are Copyright (C) 2012
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ */
+// for node.js
+if(typeof require === 'function') {
+  var load = require;
+  var print = function(msg) {
+    if(/^fail/.test(msg)) { console.error(msg); }
+    else { console.log(msg); }
+  }
+}
+load('../reflect.js');
+
+function assert(b, msg) {
+  print((b ? 'success: ' : 'fail: ') + msg);
+}
+
+function assertThrows(message, fn) {
+  try {
+    fn();
+    print('fail: expected exception, but succeeded. Message was: '+message);
+  } catch(e) {
+    assert(e.message === message, "assertThrows: "+e.message);
+  }
+}
+
+// the 'main' function
+function test() {
+  
+  (function(){
+    // https://github.com/tvcutsem/harmony-reflect/issues/11
+    function f() {}
+    var p = Proxy(f, {});
+    var proto = {};
+    p.prototype = proto;
+    assert(p.prototype === proto, 'prototype changed via p');
+    assert(f.prototype === proto, 'prototype changed via f');
+  }());
+  
+}
+
+if (typeof window === "undefined") {
+  test();
+}
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