diff --git a/lib/PngQuant.js b/lib/PngQuant.js
index f99ff57..c07a633 100644
--- a/lib/PngQuant.js
+++ b/lib/PngQuant.js
@@ -1,4 +1,4 @@
-/*jshint node: true */
+/* jshint node: true */
 const childProcess = require('child_process');
 const Stream = require('stream').Stream;
 const util = require('util');
@@ -89,7 +89,7 @@ PngQuant.prototype.write = function(chunk) {
       }
       this.commandLine =
         pngCrushBinaryPath +
-        (this.pngQuantArgs ? ' ' + this.pngQuantArgs.join(' ') : ''); // For debugging
+        (this.pngQuantArgs ? ` ${  this.pngQuantArgs.join(' ')}` : ''); // For debugging
       this.pngQuantProcess = childProcess.spawn(
         pngCrushBinaryPath,
         this.pngQuantArgs
@@ -102,7 +102,7 @@ PngQuant.prototype.write = function(chunk) {
         if (!this.hasEnded) {
           this._error(
             new Error(
-              'Saw pngquant output on stderr: ' + data.toString('ascii')
+              `Saw pngquant output on stderr: ${  data.toString('ascii')}`
             )
           );
           this.hasEnded = true;
@@ -116,8 +116,8 @@ PngQuant.prototype.write = function(chunk) {
         if (exitCode > 0 && !this.hasEnded) {
           this._error(
             new Error(
-              'The pngquant process exited with a non-zero exit code: ' +
-                exitCode
+              `The pngquant process exited with a non-zero exit code: ${ 
+                exitCode}`
             )
           );
           this.hasEnded = true;
diff --git a/test/PngQuant.js b/test/PngQuant.js
index f1b5ae7..5e56e28 100644
--- a/test/PngQuant.js
+++ b/test/PngQuant.js
@@ -1,4 +1,4 @@
-/*global describe, it, beforeEach, afterEach, setTimeout, __dirname*/
+/* global describe, it, beforeEach, afterEach, setTimeout, __dirname */
 const expect = require('unexpected')
   .clone()
   .use(require('unexpected-stream'))