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diff --git a/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-null-target-is-proxy.js
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+++ b/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-null-target-is-proxy.js
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+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
+description: >
+  If "ownKeys" trap is null or undefined, [[OwnPropertyKeys]] call is
+  properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
+info: |
+  [[OwnPropertyKeys]] ( )
+
+  [...]
+  4. Let target be O.[[ProxyTarget]].
+  5. Let trap be ? GetMethod(handler, "ownKeys").
+  6. If trap is undefined, then
+    a. Return ? target.[[OwnPropertyKeys]]().
+
+  OrdinaryOwnPropertyKeys ( O )
+
+  1. Let keys be a new empty List.
+  2. For each own property key P of O that is an array index,
+  in ascending numeric index order, do
+    a. Add P as the last element of keys.
+  3. For each own property key P of O that is a String but is not an
+  array index, in ascending chronological order of property creation, do
+    a. Add P as the last element of keys.
+  [...]
+  5. Return keys.
+includes: [compareArray.js]
+features: [Proxy]
+---*/
+
+var plainObject = {
+  foo: 1,
+  "0": 2,
+  get bar() {},
+  "1": 4,
+};
+
+var plainObjectTarget = new Proxy(plainObject, {});
+var plainObjectProxy = new Proxy(plainObjectTarget, {
+  ownKeys: null,
+});
+
+assert.compareArray(
+  Object.keys(plainObjectProxy),
+  ["0", "1", "foo", "bar"]
+);
+
+reportCompare(0, 0);