diff --git a/lib/common/options.js b/lib/common/options.js
index d0b7042c5..633c63163 100755
--- a/lib/common/options.js
+++ b/lib/common/options.js
@@ -146,7 +146,7 @@ Options.defaults = {
       removeStyleLinkTypeAttributes: false,
       removeTagWhitespace: false,
       sortAttributes: true,
-      sortClassName: true,
+      sortClassName: false,
       trimCustomFragments: true,
       useShortDoctype: true
     }