diff --git a/md6.js b/md6.js
index 1814be8..84d180d 100644
--- a/md6.js
+++ b/md6.js
@@ -36,7 +36,7 @@
 
     var exports = {};
 
-    exports._hash = function () {
+    _hash = function () {
         function to_word(input) {
             var i, length = input.length, output = [];