diff --git a/install.js b/install.js
index cf506838436..26ef3c7dd77 100644
--- a/install.js
+++ b/install.js
@@ -43,6 +43,6 @@ function onProgress(bytesTotal, delta) {
 
 function toMegabytes(bytes) {
   let mb = bytes / 1024 / 1024;
-  return (Math.round(mb * 10) / 10) + ' Mb';
+  return `${Math.round(mb * 10) / 10} Mb`;
 }