diff --git a/api/GetSpellCooldown.lua b/api/GetSpellCooldown.lua
index 9faab9e..af52b48 100644
--- a/api/GetSpellCooldown.lua
+++ b/api/GetSpellCooldown.lua
@@ -1,13 +1,15 @@
 ---@diagnostic disable: missing-return, lowercase-global
 
+---@alias bookType
+---| 'SPELL'
+---| 'PET'
+
 ---@param index number 
----@param bookType spell 
----@param pet  
----@param spell  
----@param name string 
----@param id number 
+---@param bookType bookType
 ---@return number start 
 ---@return number duration 
 ---@return number enable 
 ---Returns cooldown information about a spell in the spellbook
-function GetSpellCooldown(index, bookType, pet, spell, name, id) end
\ No newline at end of file
+---@overload fun(name: string)
+---@overload fun(id: number)
+function GetSpellCooldown(index, bookType) end
\ No newline at end of file