diff --git a/Gruntfile.js b/Gruntfile.js
index 010f71d318..4d5671565c 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -128,6 +128,7 @@ module.exports = function (grunt) {
       customize: {
         options: {
           banner: '<%= bannerDocs %>',
+          preserveComments: 'some',
           report: 'min'
         },
         src: [
@@ -144,6 +145,7 @@ module.exports = function (grunt) {
       docsJs: {
         options: {
           banner: '<%= bannerDocs %>',
+          preserveComments: 'some',
           report: 'min'
         },
         src: [