diff --git a/test/inflate.js b/test/inflate.js
index 108e712..464eae7 100644
--- a/test/inflate.js
+++ b/test/inflate.js
@@ -169,15 +169,15 @@ describe('Inflate with dictionary', function () {
 
   it('should throw on the wrong dictionary', function () {
     // var zCompressed = helpers.deflateSync('world', { dictionary: new Buffer('hello') });
-    var zCompressed = new Buffer([ 120, 187, 6, 44, 2, 21, 43, 207, 47, 202, 73, 1, 0, 6, 166, 2, 41 ]);
+    var zCompressed = new Uint8Array([ 120, 187, 6, 44, 2, 21, 43, 207, 47, 202, 73, 1, 0, 6, 166, 2, 41 ]);
 
     assert.throws(function () {
-      pako.inflate(zCompressed, { dictionary: new Buffer('world') });
+      pako.inflate(zCompressed, { dictionary: 'world' });
     }, /data error/);
   });
 
   it('trivial dictionary', function () {
-    var dict = new Buffer('abcdefghijklmnoprstuvwxyz');
+    var dict = 'abcdefghijklmnoprstuvwxyz';
     testInflate(samples, { dictionary: dict }, { dictionary: dict });
   });
 
@@ -187,7 +187,7 @@ describe('Inflate with dictionary', function () {
   });
 
   it('should throw if directory is not supplied to raw inflate', function () {
-    var dict = new Buffer('abcdefghijklmnoprstuvwxyz');
+    var dict = 'abcdefghijklmnoprstuvwxyz';
     assert.throws(function () {
       testInflate(samples, { raw: true }, { raw: true, dictionary: dict });
     });