diff --git a/src/core-logic/sidekick_core_logic.ml b/src/core-logic/sidekick_core_logic.ml
index 4636cb39..c06f698a 100644
--- a/src/core-logic/sidekick_core_logic.ml
+++ b/src/core-logic/sidekick_core_logic.ml
@@ -4,7 +4,6 @@ module Bvar = Bvar
 module Const = Const
 module Subst = Subst
 module T_builtins = T_builtins
-module Ser_sink = Ser_sink
 module Store = Term.Store
 
 (* TODO: move to separate library? *)
diff --git a/src/util/Sidekick_util.ml b/src/util/Sidekick_util.ml
index cafff83a..d1509ab4 100644
--- a/src/util/Sidekick_util.ml
+++ b/src/util/Sidekick_util.ml
@@ -25,6 +25,5 @@ module Profile = Profile
 module Chunk_stack = Chunk_stack
 module Ser_value = Ser_value
 module Ser_decode = Ser_decode
-module Ser_sink = Ser_sink
 
 let[@inline] ( let@ ) f x = f x
diff --git a/src/util/ser_decode.mli b/src/util/ser_decode.mli
index fff60b4d..8acabd2c 100644
--- a/src/util/ser_decode.mli
+++ b/src/util/ser_decode.mli
@@ -9,7 +9,6 @@ module Error : sig
   include Sidekick_sigs.PRINT with type t := t
 
   val to_string : t -> string
-
   val of_string : string -> Ser_value.t -> t
 end
 
@@ -27,16 +26,19 @@ val return_result_err : ('a, Error.t) result -> 'a t
 val fail : string -> 'a t
 val failf : ('a, unit, string, 'b t) format4 -> 'a
 val fail_err : Error.t -> 'a t
+
 val unwrap_opt : string -> 'a option -> 'a t
 (** Unwrap option, or fail *)
+
 val any : Ser_value.t t
 val list : 'a t -> 'a list t
-val tup2 : 'a t -> 'b t -> ('a*'b) t
-val tup3 : 'a t -> 'b t -> 'c t -> ('a*'b*'c) t
-val tup4 : 'a t -> 'b t ->  'c t -> 'd t -> ('a*'b*'c*'d) t
+val tup2 : 'a t -> 'b t -> ('a * 'b) t
+val tup3 : 'a t -> 'b t -> 'c t -> ('a * 'b * 'c) t
+val tup4 : 'a t -> 'b t -> 'c t -> 'd t -> ('a * 'b * 'c * 'd) t
 val dict_field : string -> 'a t -> 'a t
 val dict_field_opt : string -> 'a t -> 'a option t
 val both : 'a t -> 'b t -> ('a * 'b) t
+
 val reflect : 'a t -> Ser_value.t -> ('a, Error.t) result t
 (** [reflect dec v] returns the result of decoding [v] with [dec] *)