diff --git a/app/assets/javascripts/discourse/models/badge.js b/app/assets/javascripts/discourse/models/badge.js
index 2a4efe640ac..3752bf5a57e 100644
--- a/app/assets/javascripts/discourse/models/badge.js
+++ b/app/assets/javascripts/discourse/models/badge.js
@@ -100,7 +100,8 @@ Discourse.Badge = Discourse.Model.extend({
   },
 
   badgeTypeClassName: function() {
-    return "badge-type-" + this.get('badge_type.name').toLowerCase();
+    var type = this.get('badge_type.name') || "";
+    return "badge-type-" + type.toLowerCase();
   }.property('badge_type.name'),
 
   /**