diff --git a/test/parallel/test-buffer-alloc.js b/test/parallel/test-buffer-alloc.js
index 313a13cb1e41ad..bdba19ae66ddb5 100644
--- a/test/parallel/test-buffer-alloc.js
+++ b/test/parallel/test-buffer-alloc.js
@@ -312,7 +312,7 @@ assert.strictEqual((Buffer.from('Man')).toString('base64'), 'TWFu');
                    'dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZ' +
                    'GdlLCBleGNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm' +
                    '5hbCBwbGVhc3VyZS4=';
-  assert.strictEqual(expected, (Buffer.from(quote)).toString('base64'));
+  assert.strictEqual((Buffer.from(quote)).toString('base64'), expected);
 
   let b = Buffer.allocUnsafe(1024);
   let bytesWritten = b.write(expected, 0, 'base64');
diff --git a/test/parallel/test-stream-pipe-await-drain.js b/test/parallel/test-stream-pipe-await-drain.js
index 53cf54940d34e1..9286ceb791ce5f 100644
--- a/test/parallel/test-stream-pipe-await-drain.js
+++ b/test/parallel/test-stream-pipe-await-drain.js
@@ -22,14 +22,14 @@ writer1._write = common.mustCall(function(chunk, encoding, cb) {
   cb();
 }, 1);
 
-writer1.once('chunk-received', function() {
+writer1.once('chunk-received', () => {
   assert.strictEqual(
     reader._readableState.awaitDrain,
     0,
     'awaitDrain initial value should be 0, actual is ' +
     reader._readableState.awaitDrain
   );
-  setImmediate(function() {
+  setImmediate(() => {
     // This one should *not* get through to writer1 because writer2 is not
     // "done" processing.
     reader.push(buffer);
@@ -37,7 +37,7 @@ writer1.once('chunk-received', function() {
 });
 
 // A "slow" consumer:
-writer2._write = common.mustCall(function(chunk, encoding, cb) {
+writer2._write = common.mustCall((chunk, encoding, cb) => {
   assert.strictEqual(
     reader._readableState.awaitDrain,
     1,
@@ -49,7 +49,7 @@ writer2._write = common.mustCall(function(chunk, encoding, cb) {
   // will return false.
 }, 1);
 
-writer3._write = common.mustCall(function(chunk, encoding, cb) {
+writer3._write = common.mustCall((chunk, encoding, cb) => {
   assert.strictEqual(
     reader._readableState.awaitDrain,
     2,