diff --git a/lib/algoProperties.js b/lib/algoProperties.js
index 4c495bb..a6499e9 100644
--- a/lib/algoProperties.js
+++ b/lib/algoProperties.js
@@ -4,6 +4,7 @@ var scryptJane = require('scrypt-jane-hash');
 var x11 = require('x11-hash');
 var keccak = require('keccak-hash');
 var SHA3 = require('sha3');
+var util = require('./util.js');
 
 global.algos = {
     'sha256': {