diff --git a/src/http_keys.ml b/src/http_keys.ml
index eaea4776..008ec1df 100644
--- a/src/http_keys.ml
+++ b/src/http_keys.ml
@@ -110,6 +110,8 @@ let mk_keys ~db_conn (module Sm : Secmod.S) ~last_issue_date =
     | [] -> Time.Timestamp.never
     | v :: _ -> v.Denom_data.stamp_start
   in
+  (* WIP DEBUG *)
+  (*let denominations = [] in*)
   let denominations =
     let open Denom_data in
     (* if `?last_issue_date` query param does not exactly match the `stamp_start`