diff --git a/app/controllers/issues_controller.rb b/app/controllers/issues_controller.rb
index dbc55cb..de346c5 100644
--- a/app/controllers/issues_controller.rb
+++ b/app/controllers/issues_controller.rb
@@ -69,6 +69,7 @@ class IssuesController < ApplicationController
         @limit = Setting.feeds_limit.to_i
       when 'xml', 'json'
         @offset, @limit = api_offset_and_limit
+        @query.column_names = %w(author)
       else
         @limit = per_page_option
       end