From 170facf732dae36ae051dfe721e63b56997d8d72 Mon Sep 17 00:00:00 2001
From: Jeremy Elbourn <jelbourn@google.com>
Date: Tue, 23 Aug 2016 16:41:15 -0700
Subject: [PATCH] fix: undo change to unknown symbol for prod build

---
 gulp/util.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gulp/util.js b/gulp/util.js
index eb3705fcc0..a8ae532927 100644
--- a/gulp/util.js
+++ b/gulp/util.js
@@ -130,7 +130,7 @@ function buildModule(module, opts) {
 
   function buildMin() {
     return lazypipe()
-        .pipe(gulpif, /.css$/, cleanCSS(),
+        .pipe(gulpif, /.css$/, minifyCss(),
         uglify({ preserveComments: 'some' })
             .on('error', function(e) {
               console.log('\x07',e.message);