diff --git a/app/controllers/people_controller.rb b/app/controllers/people_controller.rb
index e27778e0560296e9854fc77f72e32fd018382842..5ed13eaf28422c9677abfcea764d3efdfb6b0c5c 100644
--- a/app/controllers/people_controller.rb
+++ b/app/controllers/people_controller.rb
@@ -13,7 +13,8 @@ class PeopleController < ApplicationController
   respond_to :js, :only => [:tag_index]
 
   rescue_from ActiveRecord::RecordNotFound do
-    render :file => Rails.root.join('public', '404.html').to_s, :layout => false, :status => 404
+    render :file => Rails.root.join('public', '404').to_s,
+           :format => :html, :layout => false, :status => 404
   end
 
   helper_method :search_query