diff --git a/gulpfile.js b/gulpfile.js
index 4f1ef508..3f963d21 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -40,7 +40,7 @@ var docOptions = {
 
 var uglifyOptions = {
     output: {
-        // ascii_only: true,
+        ascii_only: true,
         comments: /^!/
     }
 };