diff --git a/app/controllers/student_work_controller.rb b/app/controllers/student_work_controller.rb
index 17f179492..85c01bcbd 100644
--- a/app/controllers/student_work_controller.rb
+++ b/app/controllers/student_work_controller.rb
@@ -133,8 +133,9 @@ class StudentWorkController < ApplicationController
       format.js
       format.html
       format.xls {
+        filename = "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_homework_list)}.xls"
         send_data(homework_to_xls(@stundet_works), :type => "text/excel;charset=utf-8; header=present",
-                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_homework_list)}.xls")
+                  :filename => filename_for_content_disposition(filename))
       }
     end
   end
@@ -386,8 +387,9 @@ class StudentWorkController < ApplicationController
     end
     respond_to do |format|
       format.xls {
+        filename = "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_absence_list)}.xls"
         send_data(absence_penalty_list_xls(@stundet_works), :type => "text/excel;charset=utf-8; header=present",
-                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_absence_list)}.xls")
+                  :filename => filename_for_content_disposition(filename))
       }
     end
   end
@@ -396,8 +398,9 @@ class StudentWorkController < ApplicationController
   def evaluation_list
     respond_to do |format|
       format.xls {
+        filename = "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_evaluation_list)}.xls"
         send_data(evaluation_list_xls(@homework.student_works), :type => "text/excel;charset=utf-8; header=present",
-                  :filename => "#{@course.teacher.lastname.to_s + @course.teacher.firstname}_#{@course.name}_#{@course.time.to_s + @course.term}_#{@homework.name}#{l(:excel_evaluation_list)}.xls")
+                  :filename => filename_for_content_disposition(filename))
       }
     end
   end