diff --git a/db/migrate/20190823023738_change_exericse_1936_scores.rb b/db/migrate/20190823023738_change_exericse_1936_scores.rb
index d1fab00f3..ea3f66182 100644
--- a/db/migrate/20190823023738_change_exericse_1936_scores.rb
+++ b/db/migrate/20190823023738_change_exericse_1936_scores.rb
@@ -1,4 +1,5 @@
 class ChangeExericse1936Scores < ActiveRecord::Migration[5.2]
+  include ExercisesHelper
   def change
     #1936的试卷成绩有问题。
     # #https://www.educoder.net/courses/2935/exercises/1936/users/pizfnr5ts