diff --git a/lib/cadet/assessments/assessments.ex b/lib/cadet/assessments/assessments.ex
index 34d4edf84..4c326f4d0 100644
--- a/lib/cadet/assessments/assessments.ex
+++ b/lib/cadet/assessments/assessments.ex
@@ -1458,8 +1458,6 @@ defmodule Cadet.Assessments do
         |> where(submission_id: ^submission_id)
         |> order_by(:question_id)
         |> select([a], %{
-          # grouping by submission, so s.xp_bonus will be the same, but we need an
-          # aggregate function
           total_xp: a.xp + a.xp_adjustment
         })