diff -r 000000000000 -r 6474c204b198 js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x -= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x -= y);
+  $ERROR('#1.1: var x = 1; x -= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x -= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+