diff --git a/implementation.js b/implementation.js
index 30f31f4..ee2e989 100644
--- a/implementation.js
+++ b/implementation.js
@@ -4,21 +4,14 @@ var ToIntegerOrInfinity = require('es-abstract/2025/ToIntegerOrInfinity');
 var ToLength = require('es-abstract/2025/ToLength');
 var ToObject = require('es-object-atoms/ToObject');
 var SameValueZero = require('es-abstract/2025/SameValueZero');
-var $isNaN = require('math-intrinsics/isNaN');
-var $isFinite = require('math-intrinsics/isFinite');
 var $max = require('math-intrinsics/max');
-var GetIntrinsic = require('get-intrinsic');
 var callBound = require('call-bound');
 var isString = require('is-string');
 
 var $charAt = callBound('String.prototype.charAt');
-var $indexOf = GetIntrinsic('%Array.prototype.indexOf%'); // TODO: use callBind.apply without breaking IE 8
 
 module.exports = function includes(searchElement) {
 	var fromIndex = arguments.length > 1 ? ToIntegerOrInfinity(arguments[1]) : 0;
-	if ($indexOf && !$isNaN(searchElement) && $isFinite(fromIndex) && typeof searchElement !== 'undefined') {
-		return $indexOf.apply(this, arguments) > -1;
-	}
 
 	var O = ToObject(this);
 	var length = ToLength(O.length);
diff --git a/package.json b/package.json
index 0dff956..51da415 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,6 @@
 		"define-properties": "^1.2.1",
 		"es-abstract": "^1.24.2",
 		"es-object-atoms": "^1.1.2",
-		"get-intrinsic": "^1.3.0",
 		"is-string": "^1.1.1",
 		"math-intrinsics": "^1.1.0"
 	},
diff --git a/test/tests.js b/test/tests.js
index 78979d4..994b5c9 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -91,4 +91,24 @@ module.exports = function (includes, t) {
 
 		st.end();
 	});
+
+	t.test(
+		'exotic objects: uses Get, not HasProperty, unlike indexOf',
+		{ skip: typeof Proxy !== 'function' },
+		function (st) {
+			var target = [1, 2, 3, 4, 5];
+			var proxy = new Proxy(target, {
+				has: function () { return false; },
+				get: function (targ, k, r) { return Reflect.get(targ, k, r); }
+			});
+
+			st.equal(
+				true,
+				includes(proxy, 3),
+				'a lying `has` trap does not stop an element visible via `get` from being found'
+			);
+
+			st.end();
+		}
+	);
 };