diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index c9ea1ca80..2cfbc550b 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -381,7 +381,7 @@ class CoursesService
       end
       latest_bid_message = messages.first
       unless latest_bid_message.nil?
-        latest_course_dynamics << {:type => 4,:time => latest_bid_message.created_on,:message => '最近更新了作业'}#l(:label_recently_updated_message,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+        latest_course_dynamics << {:type => 4,:time => latest_bid_message.created_on,:message => l(:label_recently_updated_message,:locale => current_user.language.nil? ? 'zh':current_user.language)}
       end
       #每个作业中学生最后提交的作业
       homeworks = []
@@ -396,7 +396,7 @@ class CoursesService
       end
       latest_homework_attach = homeworks.first
       unless latest_homework_attach.nil?
-        latest_course_dynamics << {:type => 4,:time => latest_homework_attach.updated_at,:message => '最近更新了作业'}#l(:label_recently_updated_homework,:locale => current_user.language.nil? ? 'zh':current_user.language)}
+        latest_course_dynamics << {:type => 4,:time => latest_homework_attach.updated_at,:message => l(:label_recently_updated_homework,:locale => current_user.language.nil? ? 'zh':current_user.language)}
       end
       latest_course_dynamics.sort!{|order,newer| newer[:time] <=> order[:time]}
       latest_course_dynamic = latest_course_dynamics.first