diff --git a/README.md b/README.md
index 09390a9..b846784 100644
--- a/README.md
+++ b/README.md
@@ -243,7 +243,7 @@ var result = scrypt.hashSync(key,{"N":16,"r":1,"p":1},64,"");
 console.log(result.toString("hex"));
 
 //Asynchronous
-scrypt.hash(key, {"N":16,"r":1,"p":1},64,"", function(err, res) {
+scrypt.hash(key, {"N":16,"r":1,"p":1},64,"", function(err, result) {
   console.log(result.toString("hex"));
 });