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diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/this-is-not-typedarray-instance.js b/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/this-is-not-typedarray-instance.js
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+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/findLastIndex/this-is-not-typedarray-instance.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2021 Microsoft. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.findlastindex
+description: >
+  Throws a TypeError exception when `this` is not a TypedArray instance
+info: |
+  %TypedArray%.prototype.findLastIndex ( predicate [ , thisArg ] )
+
+  ...
+  2. Perform ? ValidateTypedArray(O).
+  ...
+
+  22.2.3.5.1 Runtime Semantics: ValidateTypedArray ( O )
+
+  1. If Type(O) is not Object, throw a TypeError exception.
+  2. If O does not have a [[TypedArrayName]] internal slot, throw a TypeError
+  exception.
+  ...
+includes: [testTypedArray.js]
+features: [TypedArray, array-find-from-last]
+---*/
+
+var findLastIndex = TypedArray.prototype.findLastIndex;
+var predicate = function() {};
+
+assert.throws(TypeError, function() {
+  findLastIndex.call({}, predicate);
+}, "this is an Object");
+
+assert.throws(TypeError, function() {
+  findLastIndex.call([], predicate);
+}, "this is an Array");
+
+var ab = new ArrayBuffer(8);
+assert.throws(TypeError, function() {
+  findLastIndex.call(ab, predicate);
+}, "this is an ArrayBuffer instance");
+
+var dv = new DataView(new ArrayBuffer(8), 0, 1);
+assert.throws(TypeError, function() {
+  findLastIndex.call(dv, predicate);
+}, "this is a DataView instance");
+
+reportCompare(0, 0);