diff --git a/lib/nacl.js b/lib/nacl.js
index 1f0d4d5..8bd6f4d 100644
--- a/lib/nacl.js
+++ b/lib/nacl.js
@@ -23,7 +23,7 @@ function config(config, response) {
   opt.response = response;
   opt.baseUrl = options.baseUrl;
   opt.decodedObjectName = options.decodedObjectName;
-  opt.defautRole = options.defautRole || 'guest';
+  opt.defaultRole = options.defaultRole || 'guest';
 
   if (options.rules) {
     opt.rules = utils.validate(options.rules);
@@ -70,9 +70,19 @@ function authorize(req, res, next) {
    * @type {[type]}
    */
 
-  let role = helper.getRole(req, res, opt.decodedObjectName, opt.defautRole);
+  let role = helper.getRole(req, res, opt.decodedObjectName, opt.defaultRole);
 
-  if (!_.isString(role) || !role) return;
+  /**
+   * if no role or role not provided as string
+   */
+  if (!_.isString(role) || !role) {
+    return utils.deny(
+      res,
+      404,
+      'REQUIRED: Role should be provided as a string',
+      null
+    );
+  }
 
   /**
    * get resource from the url