diff --git a/app/models/label.rb b/app/models/label.rb
index 0298e7b417c..958141a7358 100644
--- a/app/models/label.rb
+++ b/app/models/label.rb
@@ -173,7 +173,7 @@ class Label < ActiveRecord::Base
 
   def as_json(options = {})
     super(options).tap do |json|
-      json[:type] = self.type
+      json[:type] = self.try(:type)
       json[:priority] = priority(options[:project]) if options.key?(:project)
     end
   end