diff --git a/cssbeautify.js b/cssbeautify.js
index b4ae096..d123cf0 100644
--- a/cssbeautify.js
+++ b/cssbeautify.js
@@ -458,7 +458,7 @@
         return formatted;
     }
 
-    if (typeof exports !== 'undefined') {
+    if (typeof exports !== 'undefined' && typeof process !== 'undefined') {
         // Node.js module.
         module.exports = exports = cssbeautify;
     } else if (typeof window === 'object') {