diff --git a/app/helpers/ec_major_schools_helper.rb b/app/helpers/ec_major_schools_helper.rb
index 512e1cef..ad104676 100644
--- a/app/helpers/ec_major_schools_helper.rb
+++ b/app/helpers/ec_major_schools_helper.rb
@@ -11,7 +11,7 @@ module EcMajorSchoolsHelper
 
     relations = EcGraduationRequirementCalculation.joins(ec_course_support: :ec_graduation_subitem_courses).where('ec_graduation_subitem_id in (?)', subitem_ids)
 
-    reached_map = relations.where(status: true).group('ec_graduation_subitem_id').count
+    reached_map = relations.where(status: true).group('ec_graduation_subitem_courses.ec_graduation_subitem_id').count
 
     reached_map.keys.size
   end