diff --git a/lib/module.js b/lib/module.js
index bbb1556bb8..893de41139 100644
--- a/lib/module.js
+++ b/lib/module.js
@@ -467,11 +467,11 @@ Module._extensions['.json'] = function(module, filename) {
 };
 
 
-//Native extension for .node
+//Native extension for .node and OS-specific equivalents
 Module._extensions['.node'] = function(module, filename) {
   process.dlopen(filename, module.exports);
 };
-
+Module._extensions['.dylib'] = Module._extensions['.node'];
 
 // bootstrap main module.
 Module.runMain = function() {