diff --git a/lib/aspnet-identity-pw.js b/lib/aspnet-identity-pw.js
index ac60d80..7b9043d 100644
--- a/lib/aspnet-identity-pw.js
+++ b/lib/aspnet-identity-pw.js
@@ -83,6 +83,7 @@ exports.validatePassword = function validatePassword(password, hashedPassword, c
 
     var done = false;
     var error = null;
+    var result = null;
 
     if(!hashedPassword) {
 
@@ -134,7 +135,7 @@ exports.validatePassword = function validatePassword(password, hashedPassword, c
 
         result = true;
 
-        for(i = 0; i < 32; i++) {
+        for(var i = 0; i < 32; i++) {
             if(bytes[i] !== hashBytes[i]) {
                 result = false;
                 break;