diff --git a/lib/crypto/chachapoly.js b/lib/crypto/chachapoly.js
index e3b2d57d..5fa19207 100644
--- a/lib/crypto/chachapoly.js
+++ b/lib/crypto/chachapoly.js
@@ -9,7 +9,7 @@
 var assert = require('assert');
 var native = require('../utils/native');
 
-var BIG_ENDIAN = new Int8Array(Int16Array.of(1).buffer)[0] === 0;
+var BIG_ENDIAN = new Int8Array(new Int16Array([1]).buffer)[0] === 0;
 
 /**
  * ChaCha20 (used for bip151)