diff --git a/src/rStats.extras.js b/src/rStats.extras.js
index 4019948..968c74c 100644
--- a/src/rStats.extras.js
+++ b/src/rStats.extras.js
@@ -254,8 +254,10 @@ window.BrowserStats = function () {
 
 };
 
-module.exports = {
-  glStats: window.glStats,
-  threeStats: window.threeStats,
-  BrowserStats: window.BrowserStats
-};
+if (typeof module === 'object') {
+  module.exports = {
+    glStats: window.glStats,
+    threeStats: window.threeStats,
+    BrowserStats: window.BrowserStats
+  };
+}
diff --git a/src/rStats.js b/src/rStats.js
index 7de60a5..211bf5f 100644
--- a/src/rStats.js
+++ b/src/rStats.js
@@ -24,7 +24,7 @@
 
 } )();
 
-module.exports = window.rStats = rStats ( settings ) {
+window.rStats = function rStats ( settings ) {
 
     function iterateKeys ( array, callback ) {
         var keys = Object.keys( array );
@@ -425,3 +425,7 @@ module.exports = window.rStats = rStats ( settings ) {
     };
 
 }
+
+if (typeof module === 'object') {
+  module.exports = window.rStats;
+}