diff --git a/readme.md b/readme.md
index bbc0d9d..c9b5463 100644
--- a/readme.md
+++ b/readme.md
@@ -448,9 +448,9 @@ is.formData(data);
 Returns `true` if `value` is an instance of the [`URLSearchParams` class](https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams).
 
 ```js
-const data = new URLSearchParams();
+const searchParams = new URLSearchParams();
 
-is.urlSearchParams(data);
+is.urlSearchParams(searchParams);
 //=> true
 ```
 
diff --git a/test/test.ts b/test/test.ts
index accab31..87455db 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -1643,14 +1643,14 @@ test('is.formData', t => {
 });
 
 test('is.urlSearchParams', t => {
-	const params = new window.URLSearchParams();
-	t.true(is.urlSearchParams(params));
+	const searchParams = new URLSearchParams();
+	t.true(is.urlSearchParams(searchParams));
 	t.false(is.urlSearchParams({}));
 	t.false(is.urlSearchParams(undefined));
 	t.false(is.urlSearchParams(null));
 
 	t.notThrows(() => {
-		assert.urlSearchParams(params);
+		assert.urlSearchParams(searchParams);
 	});
 	t.throws(() => {
 		assert.urlSearchParams({});