diff --git a/src/main/external-player.js b/src/main/external-player.js
index c6858120..58e4925f 100644
--- a/src/main/external-player.js
+++ b/src/main/external-player.js
@@ -25,7 +25,7 @@ function spawn (playerPath, url, title) {
   if (playerPath != null) return spawnExternal(playerPath, [url])
 
   // Try to find and use VLC if external player is not specified
-  vlcCommand(function (err, vlcPath) {
+  vlcCommand((err, vlcPath) => {
     if (err) return windows.main.dispatch('externalPlayerNotFound')
     const args = [
       '--play-and-exit',
@@ -49,7 +49,7 @@ function spawnExternal (playerPath, args) {
 
   if (process.platform === 'darwin' && path.extname(playerPath) === '.app') {
     // Mac: Use executable in packaged .app bundle
-    playerPath += '/Contents/MacOS/' + path.basename(playerPath, '.app')
+    playerPath += `/Contents/MacOS/${path.basename(playerPath, '.app')}`
   }
 
   proc = cp.spawn(playerPath, args, {stdio: 'ignore'})
@@ -58,7 +58,7 @@ function spawnExternal (playerPath, args) {
   const closeModalTimeout = setTimeout(() =>
     windows.main.dispatch('exitModal'), 1000)
 
-  proc.on('close', function (code) {
+  proc.on('close', code => {
     clearTimeout(closeModalTimeout)
     if (!proc) return // Killed
     log('External player exited with code ', code)
@@ -70,7 +70,7 @@ function spawnExternal (playerPath, args) {
     proc = null
   })
 
-  proc.on('error', function (e) {
+  proc.on('error', e => {
     log('External player error', e)
   })
 }