diff --git a/include/ac_my_room.h b/include/ac_my_room.h
index e2172d28..0a044493 100644
--- a/include/ac_my_room.h
+++ b/include/ac_my_room.h
@@ -65,6 +65,7 @@ typedef int (*aMR_COUNT_FRIEND_FURNITURE_PROC)(FTR_ACTOR* ftr_actor, u8 switch_o
 typedef int (*aMR_JUDGE_PLACE_2ND_LAYER_PROC)(int ut_x, int ut_z);
 typedef void (*aMR_OPEN_CLOSE_COMMON_MOVE_PROC)(FTR_ACTOR* ftr_actor, ACTOR* actor, GAME* game, f32 start_frame,
                                                 f32 end_frame);
+typedef void (*aMR_MINI_DISK_COMMON_MOVE_PROC)(FTR_ACTOR* ftr_actor, ACTOR* my_room_actor, f32 start_frame, f32 end_frame);
 typedef void (*aMR_FAMICOM_EMU_COMMON_MOVE_PROC)(FTR_ACTOR* ftr_actor, ACTOR* my_room_actor, GAME* game, int rom_no,
                                                  int agb_rom_no);
 typedef void (*aMR_SOUND_MELODY_PROC)(FTR_ACTOR* ftr_actor, ACTOR* my_room_actor, int idx);
@@ -86,7 +87,7 @@ typedef struct my_room_clip_s {
     aMR_OPEN_CLOSE_COMMON_MOVE_PROC open_close_common_move_proc;
     /* TODO: function definitions */
     void* get_bed_action_proc;
-    void* mini_disk_common_move_proc;
+    aMR_MINI_DISK_COMMON_MOVE_PROC mini_disk_common_move_proc;
     void* set_leaf_proc;
     void* ftr2leaf_proc;
     void* leaf_start_pos_proc;