diff --git a/README.md b/README.md
index 4ea6679..fab0052 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,8 @@ var myCoin = {
     "name": "Dogecoin",
     "symbol": "DOGE",
     "algorithm": "scrypt",
+    "nValue": 1024, //optional. Defaults to 1024
+    "rValue": 1, //optional. Defaults to 1
     "txMessages": false, //or true (not required, defaults to false)
 };
 ```
diff --git a/lib/algoProperties.js b/lib/algoProperties.js
index 810c77f..c610f96 100644
--- a/lib/algoProperties.js
+++ b/lib/algoProperties.js
@@ -14,13 +14,15 @@ var algos = module.exports = global.algos = {
             }
         }
     },
-    scrypt: {
+    'scrypt': {
         //Uncomment diff if you want to use hardcoded truncated diff
         //diff: '0000ffff00000000000000000000000000000000000000000000000000000000',
         multiplier: Math.pow(2, 16),
-        hash: function(){
-            return function(){
-                return multiHashing.scrypt.apply(this, arguments);
+        hash: function(coinConfig){
+            var nValue = coinConfig.nValue || 1024;
+            var rValue = coinConfig.rValue || 1;
+            return function(data){
+                return multiHashing.scrypt(data,nValue,rValue);
             }
         }
     },
@@ -159,4 +161,4 @@ for (var algo in algos){
     else{
         algos[algo].maxDiff = diff1;
     }*/
-}
\ No newline at end of file
+}