diff --git a/api/UnitBuff.lua b/api/UnitBuff.lua
index 6bbc9c1..34e288a 100644
--- a/api/UnitBuff.lua
+++ b/api/UnitBuff.lua
@@ -14,9 +14,8 @@
 
 ---@param unit string The unit to query (e.g., "player", "target").
 ---@param index number The index of the aura to query (1-based).
----@param name string The name of the aura to query.
----@param rank string The rank of the aura (e.g., "Rank 7").
----@param filter BuffFilter A filter to specify which auras to return (e.g., "PLAYER|RAID").
+---@param rank string? The rank of the aura (e.g., "Rank 7").
+---@param filter BuffFilter? A filter to specify which auras to return (e.g., "PLAYER|RAID").
 ---@return string #name The name of the aura.
 ---@return string #rank The rank of the aura, if applicable.
 ---@return string #icon The path to the icon texture for the aura.
@@ -36,5 +35,6 @@
 ---@return number value1 Value of variable effect 1 of the aura.
 ---@return number value2 Value of variable effect 2 of the aura.
 ---@return number value3 Value of variable effect 3 of the aura.
+---@overload fun(unit: string, name: string)
 --- Returns information about a buff on a unit. This function is an alias for UnitAura() with a built-in HELPFUL filter.
-function UnitBuff(unit, index, name, rank, filter) end
+function UnitBuff(unit, index, rank, filter) end