diff --git a/app/controllers/wiki_controller.rb b/app/controllers/wiki_controller.rb
index 65b4077d0..a79e713b8 100644
--- a/app/controllers/wiki_controller.rb
+++ b/app/controllers/wiki_controller.rb
@@ -5,6 +5,7 @@ require 'cgi'
 class WikiController < ApplicationController
   WIKI_OPTIONS = {}
 
+  before_filter :authenticate_user!
   load_resource :project
 
   before_filter :authorize_read_actions,  :only => [:index, :show, :git, :compare, :compare_wiki, :history, :wiki_history, :search, :pages]