diff --git a/app/services/users/subject_service.rb b/app/services/users/subject_service.rb
index 7e3eaaa81..745b7cce2 100644
--- a/app/services/users/subject_service.rb
+++ b/app/services/users/subject_service.rb
@@ -14,7 +14,7 @@ class Users::SubjectService
     subjects = category_scope_subjects
     subjects = user_policy_filter(subjects)
 
-    custom_sort(subjects, :updated_at, params[:sort_direction])
+    custom_sort(subjects.distinct, :updated_at, params[:sort_direction])
   end
 
   private