diff --git a/test/b64.decode.js b/test/b64.decode.js
index c20e85e..32298fa 100644
--- a/test/b64.decode.js
+++ b/test/b64.decode.js
@@ -13,20 +13,17 @@ test('b64.decode returns a Promise', t => {
 
 test('b64.decode decodes Base64 to buffer', async t => {
 	const result = await b64.decode(values.base64);
-	t.true(result instanceof Buffer);
-	t.is(result.toString(), values.string);
+	t.true(Buffer.compare(result, values.buffer) === 0);
 });
 
 test('b64.decode decodes correctly in chunks', async t => {
 	const result = await b64.decode(values.base64, { chunkSize: 4 });
-	t.true(result instanceof Buffer);
-	t.is(result.toString(), values.string);
+	t.true(Buffer.compare(result, values.buffer) === 0);
 });
 
 test('b64.decode rounds chunks up to multiples of 4', async t => {
 	const result = await b64.decode(values.base64, { chunkSize: 2 });
-	t.true(result instanceof Buffer);
-	t.is(result.toString(), values.string);
+	t.true(Buffer.compare(result, values.buffer) === 0);
 });
 
 test('b64.decode rejects Promise if chunkSize is 0', async t => {
diff --git a/test/b64.js b/test/b64.js
index f554d9f..5e7d1a1 100644
--- a/test/b64.js
+++ b/test/b64.js
@@ -13,8 +13,7 @@ test('b64 calls b64.encode on buffers', async t => {
 
 test('b64 calls b64.decode on strings', async t => {
 	const result = await b64(values.base64);
-	t.true(result instanceof Buffer);
-	t.is(result.toString(), values.string);
+	t.true(Buffer.compare(result, values.buffer) === 0);
 });
 
 test('b64 rejects Promise if input is not a buffer or string', async t => {