diff --git a/lib/block_kit.atd b/lib/block_kit.atd
index 7d00112..505e476 100644
--- a/lib/block_kit.atd
+++ b/lib/block_kit.atd
@@ -83,7 +83,7 @@ type multi_static_select_menu <ocaml attr="deriving make"> = {
   ?action_id : string nullable <ocaml valid="fun s -> String.length s <= 255">;
   ?options : option_object list nullable <ocaml valid="fun l -> List.length <= 100">;
   ?option_groups : option_group list nullable <ocaml valid="fun l -> List.length <= 100">;
-  ?inital_options : options list nullable;
+  ?initial_option : option_object list nullable;
   ?confirm : confirmation_dialog_object nullable;
   ?max_selected_items : int nullable <ocaml valid="fun i -> i >= 1">;
   ?focus_on_load : bool nullable;
@@ -103,7 +103,7 @@ type static_select_menu <ocaml attr="deriving make"> = {
   ?action_id : string nullable <ocaml valid="fun s -> String.length s <= 255">;
   ?options : option_object list nullable;
   ?option_groups : option_group list nullable;
-  ?initial_option : options nullable;
+  ?initial_option: option_object nullable;
   ?confirm : confirmation_dialog_object nullable;
   ?focus_on_load : bool nullable;
   ?place_holder : text_object nullable
@@ -124,10 +124,10 @@ type confirmation_dialog_object <ocaml attr="deriving make"> = {
   ?style : style nullable;
 }
 
-type options = [
-  | Option_object of option_object
-  | Option_group of option_group
-] <ocaml repr = "classic">
+(* type options = [ *)
+(*   | Option_object of option_object *)
+(*   | Option_group  of option_group *)
+(* ] <ocaml repr = "classic"> *)
 
 type option_object <ocaml attr="deriving make"> = {
   text : text_object;
diff --git a/lib/block_kit_safe.ml b/lib/block_kit_safe.ml
index 2d0cb21..b5d5853 100644
--- a/lib/block_kit_safe.ml
+++ b/lib/block_kit_safe.ml
@@ -65,16 +65,15 @@ let make_multi_static_select_menu ?action_id ~(options : option_object list)
       )
       place_holder
   in
-  let initial_option = Option.map (fun v -> List.map (fun o -> Option_object o) v) initial_option in
   Block_kit_j.(
     Multi_static_select_menu
-      (make_multi_static_select_menu ?action_id ~options ?inital_options:initial_option ?confirm ?max_selected_items
-         ?focus_on_load ?place_holder ()
+      (make_multi_static_select_menu ?action_id ~options ?initial_option ?confirm ?max_selected_items ?focus_on_load
+         ?place_holder ()
       )
   )
 
 let make_multi_static_select_menu_group ?action_id ~(option_groups : option_group list)
-  ?(initial_option : option_group list option) ?confirm ?max_selected_items ?focus_on_load
+  ?(initial_option : option_object list option) ?confirm ?max_selected_items ?focus_on_load
   ?(place_holder : plain_text option) ()
   =
   let place_holder =
@@ -86,11 +85,10 @@ let make_multi_static_select_menu_group ?action_id ~(option_groups : option_grou
       )
       place_holder
   in
-  let initial_option = Option.map (fun v -> List.map (fun o -> Option_group o) v) initial_option in
   Block_kit_j.(
     Multi_static_select_menu
-      (make_multi_static_select_menu ?action_id ~option_groups ?inital_options:initial_option ?confirm
-         ?max_selected_items ?focus_on_load ?place_holder ()
+      (make_multi_static_select_menu ?action_id ~option_groups ?initial_option ?confirm ?max_selected_items
+         ?focus_on_load ?place_holder ()
       )
   )
 
@@ -107,14 +105,13 @@ let make_static_select_menu ?action_id ~(options : option_object list) ?(initial
       )
       place_holder
   in
-  let initial_option = Option.map (fun o -> Option_object o) initial_option in
   Block_kit_j.(
     Static_select_menu
       (make_static_select_menu ?action_id ~options ?initial_option ?confirm ?focus_on_load ?place_holder ())
   )
 
 let make_static_select_menu_group ?action_id ~(option_groups : option_group list)
-  ?(initial_option : option_group option) ?confirm ?focus_on_load ?(place_holder : plain_text option) ()
+  ?(initial_option : option_object option) ?confirm ?focus_on_load ?(place_holder : plain_text option) ()
   =
   if List.length option_groups > 100 then raise (Invalid_argument "option objects limit 100 exceeded");
   let place_holder =
@@ -126,7 +123,6 @@ let make_static_select_menu_group ?action_id ~(option_groups : option_group list
       )
       place_holder
   in
-  let initial_option = Option.map (fun o -> Option_group o) initial_option in
   Block_kit_j.(
     Static_select_menu
       (make_static_select_menu ?action_id ~option_groups ?initial_option ?confirm ?focus_on_load ?place_holder ())
diff --git a/lib_test/test_block_kit.ml b/lib_test/test_block_kit.ml
index a4446db..2bcdd39 100644
--- a/lib_test/test_block_kit.ml
+++ b/lib_test/test_block_kit.ml
@@ -28,7 +28,8 @@ let make_modal_v2 (todo_list_options : todo_list_option list) =
             )
             todo_list_options
         in
-        make_static_select_menu ~options ()
+        let initial_option = List.hd options in
+        make_static_select_menu ~initial_option ~options ()
       in
       let label = make_plain_text ~text:"Todo-list" () in
       make_input ~label ~element:static_select_menu ()