diff --git a/docs/arraybuffer.md b/docs/arraybuffer.md
index 5d371c0..236f780 100644
--- a/docs/arraybuffer.md
+++ b/docs/arraybuffer.md
@@ -456,9 +456,9 @@ function ab2str(buf) {
     return String.fromCharCode.apply(null, new Uint16Array(buf));
   }
 
-  const len =  bufView.byteLength;
-  const bstr = new Array(len);
   const bufView = new Uint16Array(buf);
+  const len =  bufView.length;
+  const bstr = new Array(len);
   for (let i = 0; i < len; i++) {
     bstr[i] = String.fromCharCode.call(null, bufView[i]);
   }