diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index a62b5f620..d7e4af7ab 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -36,7 +36,7 @@ class UsersController < ApplicationController
   #
   before_filter :can_show_course, :only => [:user_courses,:user_homeworks]
   before_filter :check_authentication
-  
+
   before_filter :find_user, :only => [:user_fanslist, :user_watchlist, :show, :edit, :update, :destroy, :edit_membership, :user_courses, :unsolved_issues_list, :unfinished_homework_list, :user_manage_homeworks,
                                       :unfinished_poll_list, :user_homeworks,:student_homeworks, :destroy_membership, :user_activities, :user_projects, :user_newfeedback, :user_comments, :update_message_viewed,
                                       :anonymous_evaluation_list,:unfinished_test_list, :watch_contests, :info, :watch_projects, :show_score, :topic_score_index, :project_score_index, :user_receive_homeworks,
diff --git a/app/views/welcome/_one_btn_mask_pop.html.erb b/app/views/welcome/_one_btn_mask_pop.html.erb
index 7532e416f..af9ccf6a6 100644
--- a/app/views/welcome/_one_btn_mask_pop.html.erb
+++ b/app/views/welcome/_one_btn_mask_pop.html.erb
@@ -21,7 +21,7 @@
             <%#= tip2 %>
           </p>-->
           <div class="clearfix  task-popup-submit04">
-            <a href="<%= url %>" class="task-btn task-btn-blue" id="btn_mask"><%= btn %></a>
+            <a href="<%= url %>" class="task-btn task-btn-blue" id="btn_mask">知道了</a>
           </div>
         </div>
       </div>