diff --git a/lib/torque/index.js b/lib/torque/index.js
index 7b68f96..ec7805f 100644
--- a/lib/torque/index.js
+++ b/lib/torque/index.js
@@ -1,4 +1,6 @@
 
-module.exports = {
-  cartocss_reference: require('./cartocss_reference').torque['torque-reference'],
-};
+if (typeof module !== "undefined") {
+  module.exports = {
+    cartocss_reference: require('./cartocss_reference').torque['torque-reference'],
+  };
+}