diff --git a/app/services/users/subject_service.rb b/app/services/users/subject_service.rb
index e0d8377c2..7e3eaaa81 100644
--- a/app/services/users/subject_service.rb
+++ b/app/services/users/subject_service.rb
@@ -65,7 +65,7 @@ class Users::SubjectService
       when 'finished' then subjects.having('finished = 1').map(&:id)
       end
 
-    relations.where(id: subject_ids) if subject_ids.present?
+    relations = relations.where(id: subject_ids) if subject_ids.present?
     relations
   end
 
@@ -75,7 +75,7 @@ class Users::SubjectService
              when 'applying'  then 1
              when 'published' then 2
              end
-    relations.where(status: status) if status
+    relations = relations.where(status: status) if status
     relations
   end