diff --git a/app/models/group.rb b/app/models/group.rb
index 50c949d84aa..21c9047c98a 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -199,6 +199,6 @@ class Group < Namespace
   end
 
   def users_with_parents
-    User.where(id: members_with_parents.pluck(:user_id))
+    User.where(id: members_with_parents.select(:user_id))
   end
 end