diff --git a/src/day8.ml b/src/day8.ml
index 2630c31..13a74a1 100644
--- a/src/day8.ml
+++ b/src/day8.ml
@@ -1,9 +1,5 @@
 open Containers
 
-(* module Vec2 : sig *)
-(* end = struct *)
-(* end *)
-
 let parse_grid () =
   let lines = Utils.lines_of_input 8 in
   lines
diff --git a/src/vec2.mli b/src/vec2.mli
index eb3eb30..0550c17 100644
--- a/src/vec2.mli
+++ b/src/vec2.mli
@@ -1,4 +1,4 @@
-type t [@@deriving show] [@@ocaml.toplevel_printer]
+type t [@@deriving show]
 
 val up : t
 val down : t