diff --git a/test/test.js b/test/test.js
index 5eb1874..3afe4b7 100644
--- a/test/test.js
+++ b/test/test.js
@@ -56,7 +56,7 @@ tape( 'the function returns `false` if not provided a Uint32Array', function tes
 		NaN,
 		true,
 		null,
-		undefined,
+		void 0,
 		[],
 		{},
 		function noop() {},