diff --git a/src/node/utils/randomstring.js b/src/node/utils/randomstring.js
index 4791f274..78846157 100644
--- a/src/node/utils/randomstring.js
+++ b/src/node/utils/randomstring.js
@@ -5,7 +5,7 @@ var crypto = require('crypto');
 
 var randomString = function randomString(len)
 {
-  crypto.randomBytes(48, function(ex, buf) {
+  crypto.randomBytes(len, function(ex, buf) {
     return buf.toString('hex');
   });
 };