diff --git a/unikernel/unikernel.ml b/unikernel/unikernel.ml
index 1f2694d1..3e2d5206 100644
--- a/unikernel/unikernel.ml
+++ b/unikernel/unikernel.ml
@@ -32,6 +32,23 @@ let always x _ = x
 let map_err_to_string pp_err res =
   Lwt.map (R.reword_error (R.msgf "%a" pp_err)) res
 
+let list_get_ok l =
+  let err = ref None in
+  try
+    l
+    |> List.map (function
+      | Error _e as e ->
+          err := Some e;
+          raise Exit
+      | Ok v -> v)
+    |> Result.ok
+  with Exit -> ( match !err with None -> assert false | Some v -> v)
+
+let lwt_list_get_ok l =
+  let open Lwt.Syntax in
+  let+ l = l in
+  list_get_ok l
+
 module Make
     (Assets_ro : Mirage_kv.RO)
     (Certificates_ro : Mirage_kv.RO)
@@ -40,8 +57,6 @@ module Make
     (Connect : Connect.S)
     (HTTP_server : Paf_mirage.S) =
 struct
-  (* WIP
-     read directories *)
   module Assets = struct
     let ( let*? ) = Lwt_result.bind
     let ( let+? ) x f = Lwt_result.map f x
@@ -61,23 +76,6 @@ struct
       |> Option.to_result ~none:(`Msg (Fmt.str "missing `%s` directory" name))
       |> Lwt_result.lift
 
-    let list_get_ok l =
-      let err = ref None in
-      try
-        l
-        |> List.map (function
-          | Error _e as e ->
-              err := Some e;
-              raise Exit
-          | Ok v -> v)
-        |> Result.ok
-      with Exit -> ( match !err with None -> assert false | Some v -> v)
-
-    let lwt_list_get_ok l =
-      let open Lwt.Syntax in
-      let+ l = l in
-      list_get_ok l
-
     let get ro s =
       let*? base_dir = get_subdirs ro Mirage_kv.Key.empty in
       let*? dir = find base_dir s in