diff --git a/app/assets/javascripts/judge.js b/app/assets/javascripts/judge.js
index 46ab313..d894cf1 100644
--- a/app/assets/javascripts/judge.js
+++ b/app/assets/javascripts/judge.js
@@ -189,6 +189,7 @@
     this.attrValidators = root.JSON.parse(this.element.getAttribute('data-validate'));
 
     _.each(this.attrValidators, function(av) {
+      av.options = av.options || {};
       if (this.element.value.length || av.options.allow_blank !== true) {
         var method     = _.bind(judge.eachValidators[av.kind], this.element),
             validation = method(av.options, av.messages);