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diff --git a/js/src/tests/test262/annexB/language/statements/for-await-of/iterator-close-return-emulates-undefined-throws-when-called.js b/js/src/tests/test262/annexB/language/statements/for-await-of/iterator-close-return-emulates-undefined-throws-when-called.js
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index 0000000000..21860d325e
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+++ b/js/src/tests/test262/annexB/language/statements/for-await-of/iterator-close-return-emulates-undefined-throws-when-called.js
@@ -0,0 +1,40 @@
+// |reftest| async
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-getiterator
+description: >
+    `GetIterator(obj, ~async~)` must attempt to call `obj[@@asyncIterator]` when
+    that value is an object with an [[IsHTMLDDA]] internal slot, not act as if
+    the value were `undefined`.
+features: [async-iteration, IsHTMLDDA]
+flags: [async]
+---*/
+
+async function f() {
+  var IsHTMLDDA = $262.IsHTMLDDA;
+  var iter = {
+    [Symbol.asyncIterator]: IsHTMLDDA,
+    get [Symbol.iterator]() {
+      throw new Test262Error("shouldn't touch Symbol.iterator");
+    },
+  };
+
+  // `IsHTMLDDA` is called here with `iter` as `this` and no arguments, and it's
+  // expected to return `null` under these conditions.  Then the iteration
+  // protocol throws a `TypeError` because `null` isn't an object.
+  for await (var x of iter)
+    return "for-await-of body shouldn't be reached";
+
+  return "should have failed earlier";
+}
+
+f().then($DONE,
+         function (e) {
+           assert.sameValue(e.constructor, TypeError,
+                            "expected TypeError because " +
+                            "`iter[Symbol.asyncIterator]() returned a " +
+                            "non-object: " + e);
+         })
+   .then($DONE, $DONE);