diff --git a/core/grammar/ast.ml b/core/grammar/ast.ml
index 4be17ef22..51f9f5f00 100644
--- a/core/grammar/ast.ml
+++ b/core/grammar/ast.ml
@@ -190,7 +190,8 @@ type ('agent, 'agent_sig, 'pattern, 'mixture, 'id, 'rule) compil = {
   configurations: configuration list;
   tokens: string Loc.annoted list;
   volumes: (string * float * string) list;
-  guard_param_values: (string Loc.annoted * bool) list; (** The guard parameters that have a defined value (true or false).*)
+  guard_param_values: (string Loc.annoted * bool) list;
+      (** The guard parameters that have a defined value (true or false).*)
 }
 
 type parsing_compil = (agent, agent_sig, mixture, mixture, string, rule) compil
@@ -1149,7 +1150,8 @@ let print_parsing_compil_kappa f c =
     c.perturbations
     (Pp.list Pp.space print_init)
     c.init
-    (Pp.list Pp.space (fun f ((s, _), b) -> Format.fprintf f "%%guard_param: %s -> %b" s b))
+    (Pp.list Pp.space (fun f ((s, _), b) ->
+         Format.fprintf f "%%guard_param: %s -> %b" s b))
     c.guard_param_values
 
 let arrow_notation_to_yojson filenames f_mix f_var r =
@@ -1583,21 +1585,21 @@ let merge_guards g1 g2 =
   List.sort_uniq String.compare guards
 
 let rec guard_params_from_guard = function
-| LKappa.True | LKappa.False -> []
-| Param id -> [id]
-| Not guard -> guard_params_from_guard guard
-| And (g1, g2) | Or (g1, g2) ->
-  let gp1 = guard_params_from_guard g1 in
-  let gp2 = guard_params_from_guard g2 in
-  merge_guards gp1 gp2
+  | LKappa.True | LKappa.False -> []
+  | Param id -> [ id ]
+  | Not guard -> guard_params_from_guard guard
+  | And (g1, g2) | Or (g1, g2) ->
+    let gp1 = guard_params_from_guard g1 in
+    let gp2 = guard_params_from_guard g2 in
+    merge_guards gp1 gp2
 
 let get_list_of_guard_parameters r =
-  List.fold_left (fun guard_params (_, guard, (_, _)) ->
-    match guard with
-    | None -> guard_params
-    | Some g ->
-    merge_guards guard_params (guard_params_from_guard g)
-    ) [] r
+  List.fold_left
+    (fun guard_params (_, guard, (_, _)) ->
+      match guard with
+      | None -> guard_params
+      | Some g -> merge_guards guard_params (guard_params_from_guard g))
+    [] r
 
 let split_mixture m =
   List.fold_right
@@ -1731,8 +1733,11 @@ let compil_to_json c =
              (JsonUtil.of_list (Loc.string_annoted_to_json ~filenames)))
           c.configurations );
       ( "guard_param_values",
-        JsonUtil.of_list ( JsonUtil.of_pair (Loc.string_annoted_to_json ~filenames) JsonUtil.of_bool) c.guard_param_values
-      );
+        JsonUtil.of_list
+          (JsonUtil.of_pair
+             (Loc.string_annoted_to_json ~filenames)
+             JsonUtil.of_bool)
+          c.guard_param_values );
     ]
 
 let compil_of_json = function
@@ -1826,9 +1831,17 @@ let compil_of_json = function
          guard_param_values =
            JsonUtil.to_list
              ~error_msg:
-               (JsonUtil.exn_msg_cant_import_from_json "AST guard_param_values sig")
-             (JsonUtil.to_pair ~error_msg:(JsonUtil.exn_msg_cant_import_from_json "AST guard_param_values sig")
-             (Loc.string_annoted_of_json ~filenames) (JsonUtil.to_bool ~error_msg:(JsonUtil.exn_msg_cant_import_from_json "AST guard_param_values boolean value")))
+               (JsonUtil.exn_msg_cant_import_from_json
+                  "AST guard_param_values sig")
+             (JsonUtil.to_pair
+                ~error_msg:
+                  (JsonUtil.exn_msg_cant_import_from_json
+                     "AST guard_param_values sig")
+                (Loc.string_annoted_of_json ~filenames)
+                (JsonUtil.to_bool
+                   ~error_msg:
+                     (JsonUtil.exn_msg_cant_import_from_json
+                        "AST guard_param_values boolean value")))
              (List.assoc "guard_param_values" l);
        }
      with Not_found ->
diff --git a/core/grammar/ast.mli b/core/grammar/ast.mli
index 8e83cfe04..cfa18d37d 100644
--- a/core/grammar/ast.mli
+++ b/core/grammar/ast.mli
@@ -185,8 +185,10 @@ val split_mixture : mixture -> mixture * mixture
 val infer_agent_signatures : parsing_compil -> parsing_compil
 (** Used when agent signatures is implicit: infer agent signatures and tokens from init, rules and perturbations *)
 
-val get_list_of_guard_parameters : (string Loc.annoted option * string LKappa.guard option * 'rule Loc.annoted)
-list -> string list
+val get_list_of_guard_parameters :
+  (string Loc.annoted option * string LKappa.guard option * 'rule Loc.annoted)
+  list ->
+  string list
 (** Returns a list of all the parameters used in the guards of the rule list. *)
 
 (** {6 Printers} *)
diff --git a/core/grammar/cst.ml b/core/grammar/cst.ml
index 8345166ba..4f9d931c3 100644
--- a/core/grammar/cst.ml
+++ b/core/grammar/cst.ml
@@ -37,5 +37,8 @@ let append_to_ast_compil rev_instr compil =
           Ast.configurations = (param_name, value_list) :: r.Ast.configurations;
         }
       | Ast.GUARD_PARAM (params_sig, b) ->
-        { r with Ast.guard_param_values = (params_sig, b) :: r.Ast.guard_param_values })
+        {
+          r with
+          Ast.guard_param_values = (params_sig, b) :: r.Ast.guard_param_values;
+        })
     compil (List.rev rev_instr)
diff --git a/core/grammar/lKappa_compiler.ml b/core/grammar/lKappa_compiler.ml
index da4f0aeaf..92063cbd1 100644
--- a/core/grammar/lKappa_compiler.ml
+++ b/core/grammar/lKappa_compiler.ml
@@ -2729,8 +2729,7 @@ let compil_of_ast ~warning ~debug_mode ~syntax_version ~var_overwrite ast_compil
       tokens_finder alg_vars_finder ast_compil.init
   in
 
-  let guard_params = Ast.get_list_of_guard_parameters ast_compil.rules
-in
+  let guard_params = Ast.get_list_of_guard_parameters ast_compil.rules in
 
   {
     agents_sig;
diff --git a/core/grammar/lKappa_compiler.mli b/core/grammar/lKappa_compiler.mli
index 93005cfa4..a26d0f803 100644
--- a/core/grammar/lKappa_compiler.mli
+++ b/core/grammar/lKappa_compiler.mli
@@ -48,7 +48,9 @@ type ast_compiled_data = {
   token_names: unit NamedDecls.t;
   alg_vars_finder: int Mods.StringMap.t;
   updated_alg_vars: int list;  (** alg vars with forbidden constant prop *)
-  guard_params: string list; (** all guard parameters that are present in any guard in the code *) (*rTODO make it an int list*)
+  guard_params: string list;
+      (** all guard parameters that are present in any guard in the code *)
+  (*rTODO make it an int list*)
   result:
     ( Ast.agent,
       Ast.agent_sig,
diff --git a/core/term/lKappa.ml b/core/term/lKappa.ml
index 718f6df90..d639e2115 100644
--- a/core/term/lKappa.ml
+++ b/core/term/lKappa.ml
@@ -518,8 +518,7 @@ let rec print_guard f g =
   | Or (a, b) -> Format.fprintf f "@[(%a || %a)@]" print_guard a print_guard b
   | Not a -> Format.fprintf f "@[[not] %a@]" print_guard a
 
-let print_guard f g =
-  Format.fprintf f "/*if*/ %a /*then*/@ " print_guard g
+let print_guard f g = Format.fprintf f "/*if*/ %a /*then*/@ " print_guard g
 
 let print_rule ~noCounters ~full sigs counters_info pr_tok pr_var f r =
   Format.fprintf f "@[<h>%t%t%t%a%t@]"