diff --git a/lib/algoProperties.js b/lib/algoProperties.js
index fff9648..ce77c69 100644
--- a/lib/algoProperties.js
+++ b/lib/algoProperties.js
@@ -13,6 +13,8 @@ var algos = module.exports = global.algos = {
         }
     },
     scrypt: {
+        //Uncomment diff if you want to use hardcoded truncated diff
+        //diff: new Buffer('0000ffff00000000000000000000000000000000000000000000000000000000', 'hex'),
         shift: 20,
         multiplier: Math.pow(2, 16),
         hash: function(){